diff --git a/src/applications/maniphest/controller/ManiphestTaskEditController.php b/src/applications/maniphest/controller/ManiphestTaskEditController.php
index a4086281dd..6438c47d93 100644
--- a/src/applications/maniphest/controller/ManiphestTaskEditController.php
+++ b/src/applications/maniphest/controller/ManiphestTaskEditController.php
@@ -1,736 +1,749 @@
 <?php
 
 final class ManiphestTaskEditController extends ManiphestController {
 
   private $id;
 
   public function willProcessRequest(array $data) {
     $this->id = idx($data, 'id');
   }
 
   public function processRequest() {
     $request = $this->getRequest();
     $user = $request->getUser();
 
     $response_type = $request->getStr('responseType', 'task');
     $order = $request->getStr('order', PhabricatorProjectColumn::DEFAULT_ORDER);
 
     $can_edit_assign = $this->hasApplicationCapability(
       ManiphestEditAssignCapability::CAPABILITY);
     $can_edit_policies = $this->hasApplicationCapability(
       ManiphestEditPoliciesCapability::CAPABILITY);
     $can_edit_priority = $this->hasApplicationCapability(
       ManiphestEditPriorityCapability::CAPABILITY);
     $can_edit_projects = $this->hasApplicationCapability(
       ManiphestEditProjectsCapability::CAPABILITY);
     $can_edit_status = $this->hasApplicationCapability(
       ManiphestEditStatusCapability::CAPABILITY);
 
     $parent_task = null;
     $template_id = null;
 
     if ($this->id) {
       $task = id(new ManiphestTaskQuery())
         ->setViewer($user)
         ->requireCapabilities(
           array(
             PhabricatorPolicyCapability::CAN_VIEW,
             PhabricatorPolicyCapability::CAN_EDIT,
           ))
         ->withIDs(array($this->id))
         ->executeOne();
       if (!$task) {
         return new Aphront404Response();
       }
     } else {
       $task = ManiphestTask::initializeNewTask($user);
 
       // We currently do not allow you to set the task status when creating
       // a new task, although now that statuses are custom it might make
       // sense.
       $can_edit_status = false;
 
       // These allow task creation with defaults.
       if (!$request->isFormPost()) {
         $task->setTitle($request->getStr('title'));
 
         if ($can_edit_projects) {
           $projects = $request->getStr('projects');
           if ($projects) {
             $tokens = $request->getStrList('projects');
 
             $type_project = PhabricatorProjectProjectPHIDType::TYPECONST;
             foreach ($tokens as $key => $token) {
               if (phid_get_type($token) == $type_project) {
                 // If this is formatted like a PHID, leave it as-is.
                 continue;
               }
 
               if (preg_match('/^#/', $token)) {
                 // If this already has a "#", leave it as-is.
                 continue;
               }
 
               // Add a "#" prefix.
               $tokens[$key] = '#'.$token;
             }
 
             $default_projects = id(new PhabricatorObjectQuery())
               ->setViewer($user)
               ->withNames($tokens)
               ->execute();
             $default_projects = mpull($default_projects, 'getPHID');
 
             if ($default_projects) {
               $task->attachProjectPHIDs($default_projects);
             }
           }
         }
 
         if ($can_edit_priority) {
           $priority = $request->getInt('priority');
           if ($priority !== null) {
             $priority_map = ManiphestTaskPriority::getTaskPriorityMap();
             if (isset($priority_map[$priority])) {
                 $task->setPriority($priority);
             }
           }
         }
 
         $task->setDescription($request->getStr('description'));
 
         if ($can_edit_assign) {
           $assign = $request->getStr('assign');
           if (strlen($assign)) {
             $assign_user = id(new PhabricatorPeopleQuery())
               ->setViewer($user)
               ->withUsernames(array($assign))
               ->executeOne();
             if (!$assign_user) {
               $assign_user = id(new PhabricatorPeopleQuery())
                 ->setViewer($user)
                 ->withPHIDs(array($assign))
                 ->executeOne();
             }
 
             if ($assign_user) {
               $task->setOwnerPHID($assign_user->getPHID());
             }
           }
         }
       }
 
       $template_id = $request->getInt('template');
 
       // You can only have a parent task if you're creating a new task.
       $parent_id = $request->getInt('parent');
       if ($parent_id) {
         $parent_task = id(new ManiphestTaskQuery())
           ->setViewer($user)
           ->withIDs(array($parent_id))
           ->executeOne();
         if (!$template_id) {
           $template_id = $parent_id;
         }
       }
     }
 
     $errors = array();
     $e_title = true;
 
     $field_list = PhabricatorCustomField::getObjectFields(
       $task,
       PhabricatorCustomField::ROLE_EDIT);
     $field_list->setViewer($user);
     $field_list->readFieldsFromStorage($task);
 
     $aux_fields = $field_list->getFields();
 
     if ($request->isFormPost()) {
       $changes = array();
 
       $new_title = $request->getStr('title');
       $new_desc = $request->getStr('description');
       $new_status = $request->getStr('status');
 
       if (!$task->getID()) {
         $workflow = 'create';
       } else {
         $workflow = '';
       }
 
       $changes[ManiphestTransaction::TYPE_TITLE] = $new_title;
       $changes[ManiphestTransaction::TYPE_DESCRIPTION] = $new_desc;
 
       if ($can_edit_status) {
         $changes[ManiphestTransaction::TYPE_STATUS] = $new_status;
       } else if (!$task->getID()) {
         // Create an initial status transaction for the burndown chart.
         // TODO: We can probably remove this once Facts comes online.
         $changes[ManiphestTransaction::TYPE_STATUS] = $task->getStatus();
       }
 
       $owner_tokenizer = $request->getArr('assigned_to');
       $owner_phid = reset($owner_tokenizer);
 
       if (!strlen($new_title)) {
         $e_title = pht('Required');
         $errors[] = pht('Title is required.');
       }
 
       $old_values = array();
       foreach ($aux_fields as $aux_arr_key => $aux_field) {
         // TODO: This should be buildFieldTransactionsFromRequest() once we
         // switch to ApplicationTransactions properly.
 
         $aux_old_value = $aux_field->getOldValueForApplicationTransactions();
         $aux_field->readValueFromRequest($request);
         $aux_new_value = $aux_field->getNewValueForApplicationTransactions();
 
         // TODO: We're faking a call to the ApplicaitonTransaction validation
         // logic here. We need valid objects to pass, but they aren't used
         // in a meaningful way. For now, build User objects. Once the Maniphest
         // objects exist, this will switch over automatically. This is a big
         // hack but shouldn't be long for this world.
         $placeholder_editor = new PhabricatorUserProfileEditor();
 
         $field_errors = $aux_field->validateApplicationTransactions(
           $placeholder_editor,
           PhabricatorTransactions::TYPE_CUSTOMFIELD,
           array(
             id(new ManiphestTransaction())
               ->setOldValue($aux_old_value)
               ->setNewValue($aux_new_value),
           ));
 
         foreach ($field_errors as $error) {
           $errors[] = $error->getMessage();
         }
 
         $old_values[$aux_field->getFieldKey()] = $aux_old_value;
       }
 
       if ($errors) {
         $task->setTitle($new_title);
         $task->setDescription($new_desc);
         $task->setPriority($request->getInt('priority'));
         $task->setOwnerPHID($owner_phid);
         $task->setCCPHIDs($request->getArr('cc'));
         $task->attachProjectPHIDs($request->getArr('projects'));
       } else {
 
         if ($can_edit_priority) {
           $changes[ManiphestTransaction::TYPE_PRIORITY] =
             $request->getInt('priority');
         }
         if ($can_edit_assign) {
           $changes[ManiphestTransaction::TYPE_OWNER] = $owner_phid;
         }
 
         $changes[ManiphestTransaction::TYPE_CCS] = $request->getArr('cc');
 
         if ($can_edit_projects) {
           $projects = $request->getArr('projects');
           $changes[ManiphestTransaction::TYPE_PROJECTS] =
             $projects;
           $column_phid = $request->getStr('columnPHID');
           // allow for putting a task in a project column at creation -only-
           if (!$task->getID() && $column_phid && $projects) {
             $column = id(new PhabricatorProjectColumnQuery())
               ->setViewer($user)
               ->withProjectPHIDs($projects)
               ->withPHIDs(array($column_phid))
               ->executeOne();
             if ($column) {
               $changes[ManiphestTransaction::TYPE_PROJECT_COLUMN] =
                 array(
                   'new' => array(
                     'projectPHID' => $column->getProjectPHID(),
                     'columnPHIDs' => array($column_phid)),
                   'old' => array(
                     'projectPHID' => $column->getProjectPHID(),
                     'columnPHIDs' => array()));
             }
           }
         }
 
         if ($can_edit_policies) {
           $changes[PhabricatorTransactions::TYPE_VIEW_POLICY] =
             $request->getStr('viewPolicy');
           $changes[PhabricatorTransactions::TYPE_EDIT_POLICY] =
             $request->getStr('editPolicy');
         }
 
         $template = new ManiphestTransaction();
         $transactions = array();
 
         foreach ($changes as $type => $value) {
           $transaction = clone $template;
           $transaction->setTransactionType($type);
           if ($type == ManiphestTransaction::TYPE_PROJECT_COLUMN) {
             $transaction->setNewValue($value['new']);
             $transaction->setOldValue($value['old']);
           } else if ($type == ManiphestTransaction::TYPE_PROJECTS) {
             // TODO: Gross.
             $project_type =
               PhabricatorProjectObjectHasProjectEdgeType::EDGECONST;
             $transaction
               ->setTransactionType(PhabricatorTransactions::TYPE_EDGE)
               ->setMetadataValue('edge:type', $project_type)
               ->setNewValue(
                 array(
                   '=' => array_fuse($value),
                 ));
           } else {
             $transaction->setNewValue($value);
           }
           $transactions[] = $transaction;
         }
 
         if ($aux_fields) {
           foreach ($aux_fields as $aux_field) {
             $transaction = clone $template;
             $transaction->setTransactionType(
               PhabricatorTransactions::TYPE_CUSTOMFIELD);
             $aux_key = $aux_field->getFieldKey();
             $transaction->setMetadataValue('customfield:key', $aux_key);
             $old = idx($old_values, $aux_key);
             $new = $aux_field->getNewValueForApplicationTransactions();
 
             $transaction->setOldValue($old);
             $transaction->setNewValue($new);
 
             $transactions[] = $transaction;
           }
         }
 
         if ($transactions) {
           $is_new = !$task->getID();
 
           $event = new PhabricatorEvent(
             PhabricatorEventType::TYPE_MANIPHEST_WILLEDITTASK,
             array(
               'task'          => $task,
               'new'           => $is_new,
               'transactions'  => $transactions,
             ));
           $event->setUser($user);
           $event->setAphrontRequest($request);
           PhutilEventEngine::dispatchEvent($event);
 
           $task = $event->getValue('task');
           $transactions = $event->getValue('transactions');
 
           $editor = id(new ManiphestTransactionEditor())
             ->setActor($user)
             ->setContentSourceFromRequest($request)
             ->setContinueOnNoEffect(true)
             ->applyTransactions($task, $transactions);
 
           $event = new PhabricatorEvent(
             PhabricatorEventType::TYPE_MANIPHEST_DIDEDITTASK,
             array(
               'task'          => $task,
               'new'           => $is_new,
               'transactions'  => $transactions,
             ));
           $event->setUser($user);
           $event->setAphrontRequest($request);
           PhutilEventEngine::dispatchEvent($event);
         }
 
 
         if ($parent_task) {
           // TODO: This should be transactional now.
           id(new PhabricatorEdgeEditor())
             ->addEdge(
               $parent_task->getPHID(),
               PhabricatorEdgeConfig::TYPE_TASK_DEPENDS_ON_TASK,
               $task->getPHID())
             ->save();
           $workflow = $parent_task->getID();
         }
 
         if ($request->isAjax()) {
           switch ($response_type) {
             case 'card':
               $owner = null;
               if ($task->getOwnerPHID()) {
                 $owner = id(new PhabricatorHandleQuery())
                   ->setViewer($user)
                   ->withPHIDs(array($task->getOwnerPHID()))
                   ->executeOne();
               }
               $tasks = id(new ProjectBoardTaskCard())
                 ->setViewer($user)
                 ->setTask($task)
                 ->setOwner($owner)
                 ->setCanEdit(true)
                 ->getItem();
 
               $column = id(new PhabricatorProjectColumnQuery())
                 ->setViewer($user)
                 ->withPHIDs(array($request->getStr('columnPHID')))
                 ->executeOne();
               if (!$column) {
                 return new Aphront404Response();
               }
 
               $positions = id(new PhabricatorProjectColumnPositionQuery())
                 ->setViewer($user)
                 ->withColumns(array($column))
                 ->execute();
               $task_phids = mpull($positions, 'getObjectPHID');
 
               $column_tasks = id(new ManiphestTaskQuery())
                 ->setViewer($user)
                 ->withPHIDs($task_phids)
                 ->execute();
 
-              $sort_map = mpull(
-                $column_tasks,
-                'getPrioritySortVector',
-                'getPHID');
+              if ($order == PhabricatorProjectColumn::ORDER_NATURAL) {
+                // TODO: This is a little bit awkward, because PHP and JS use
+                // slightly different sort order parameters to achieve the same
+                // effect. It would be unify this a bit at some point.
+                $sort_map = array();
+                foreach ($positions as $position) {
+                  $sort_map[$position->getObjectPHID()] = array(
+                    -$position->getSequence(),
+                    $position->getID(),
+                  );
+                }
+              } else {
+                $sort_map = mpull(
+                  $column_tasks,
+                  'getPrioritySortVector',
+                  'getPHID');
+              }
 
               $data = array(
                 'sortMap' => $sort_map,
               );
               break;
             case 'task':
             default:
               $tasks = $this->renderSingleTask($task);
               $data = array();
               break;
           }
           return id(new AphrontAjaxResponse())->setContent(
             array(
               'tasks' => $tasks,
               'data' => $data,
             ));
         }
 
         $redirect_uri = '/T'.$task->getID();
 
         if ($workflow) {
           $redirect_uri .= '?workflow='.$workflow;
         }
 
         return id(new AphrontRedirectResponse())
           ->setURI($redirect_uri);
       }
     } else {
       if (!$task->getID()) {
         $task->setCCPHIDs(array(
           $user->getPHID(),
         ));
         if ($template_id) {
           $template_task = id(new ManiphestTaskQuery())
             ->setViewer($user)
             ->withIDs(array($template_id))
             ->executeOne();
           if ($template_task) {
             $task->setCCPHIDs($template_task->getCCPHIDs());
             $task->attachProjectPHIDs($template_task->getProjectPHIDs());
             $task->setOwnerPHID($template_task->getOwnerPHID());
             $task->setPriority($template_task->getPriority());
             $task->setViewPolicy($template_task->getViewPolicy());
             $task->setEditPolicy($template_task->getEditPolicy());
 
             $template_fields = PhabricatorCustomField::getObjectFields(
               $template_task,
               PhabricatorCustomField::ROLE_EDIT);
 
             $fields = $template_fields->getFields();
             foreach ($fields as $key => $field) {
               if (!$field->shouldCopyWhenCreatingSimilarTask()) {
                 unset($fields[$key]);
               }
               if (empty($aux_fields[$key])) {
                 unset($fields[$key]);
               }
             }
 
             if ($fields) {
               id(new PhabricatorCustomFieldList($fields))
                 ->setViewer($user)
                 ->readFieldsFromStorage($template_task);
 
               foreach ($fields as $key => $field) {
                 $aux_fields[$key]->setValueFromStorage(
                   $field->getValueForStorage());
               }
             }
           }
         }
       }
     }
 
     $phids = array_merge(
       array($task->getOwnerPHID()),
       $task->getCCPHIDs(),
       $task->getProjectPHIDs());
 
     if ($parent_task) {
       $phids[] = $parent_task->getPHID();
     }
 
     $phids = array_filter($phids);
     $phids = array_unique($phids);
 
     $handles = $this->loadViewerHandles($phids);
 
     $error_view = null;
     if ($errors) {
       $error_view = new AphrontErrorView();
       $error_view->setErrors($errors);
     }
 
     $priority_map = ManiphestTaskPriority::getTaskPriorityMap();
 
     if ($task->getOwnerPHID()) {
       $assigned_value = array($handles[$task->getOwnerPHID()]);
     } else {
       $assigned_value = array();
     }
 
     if ($task->getCCPHIDs()) {
       $cc_value = array_select_keys($handles, $task->getCCPHIDs());
     } else {
       $cc_value = array();
     }
 
     if ($task->getProjectPHIDs()) {
       $projects_value = array_select_keys($handles, $task->getProjectPHIDs());
     } else {
       $projects_value = array();
     }
 
     $cancel_id = nonempty($task->getID(), $template_id);
     if ($cancel_id) {
       $cancel_uri = '/T'.$cancel_id;
     } else {
       $cancel_uri = '/maniphest/';
     }
 
     if ($task->getID()) {
       $button_name = pht('Save Task');
       $header_name = pht('Edit Task');
     } else if ($parent_task) {
       $cancel_uri = '/T'.$parent_task->getID();
       $button_name = pht('Create Task');
       $header_name = pht('Create New Subtask');
     } else {
       $button_name = pht('Create Task');
       $header_name = pht('Create New Task');
     }
 
     require_celerity_resource('maniphest-task-edit-css');
 
     $project_tokenizer_id = celerity_generate_unique_node_id();
 
     $form = new AphrontFormView();
     $form
       ->setUser($user)
       ->addHiddenInput('template', $template_id)
       ->addHiddenInput('responseType', $response_type)
       ->addHiddenInput('order', $order)
       ->addHiddenInput('columnPHID', $request->getStr('columnPHID'));
 
     if ($parent_task) {
       $form
         ->appendChild(
           id(new AphrontFormStaticControl())
             ->setLabel(pht('Parent Task'))
             ->setValue($handles[$parent_task->getPHID()]->getFullName()))
         ->addHiddenInput('parent', $parent_task->getID());
     }
 
     $form
       ->appendChild(
         id(new AphrontFormTextAreaControl())
           ->setLabel(pht('Title'))
           ->setName('title')
           ->setError($e_title)
           ->setHeight(AphrontFormTextAreaControl::HEIGHT_VERY_SHORT)
           ->setValue($task->getTitle()));
 
     if ($can_edit_status) {
       // See T4819.
       $status_map = ManiphestTaskStatus::getTaskStatusMap();
       $dup_status = ManiphestTaskStatus::getDuplicateStatus();
 
       if ($task->getStatus() != $dup_status) {
         unset($status_map[$dup_status]);
       }
 
       $form
         ->appendChild(
           id(new AphrontFormSelectControl())
             ->setLabel(pht('Status'))
             ->setName('status')
             ->setValue($task->getStatus())
             ->setOptions($status_map));
     }
 
     $policies = id(new PhabricatorPolicyQuery())
       ->setViewer($user)
       ->setObject($task)
       ->execute();
 
     if ($can_edit_assign) {
       $form->appendChild(
         id(new AphrontFormTokenizerControl())
           ->setLabel(pht('Assigned To'))
           ->setName('assigned_to')
           ->setValue($assigned_value)
           ->setUser($user)
           ->setDatasource(new PhabricatorPeopleDatasource())
           ->setLimit(1));
     }
 
     $form
       ->appendChild(
         id(new AphrontFormTokenizerControl())
           ->setLabel(pht('CC'))
           ->setName('cc')
           ->setValue($cc_value)
           ->setUser($user)
           ->setDatasource(new PhabricatorMetaMTAMailableDatasource()));
 
     if ($can_edit_priority) {
       $form
         ->appendChild(
           id(new AphrontFormSelectControl())
             ->setLabel(pht('Priority'))
             ->setName('priority')
             ->setOptions($priority_map)
             ->setValue($task->getPriority()));
     }
 
     if ($can_edit_policies) {
       $form
         ->appendChild(
           id(new AphrontFormPolicyControl())
             ->setUser($user)
             ->setCapability(PhabricatorPolicyCapability::CAN_VIEW)
             ->setPolicyObject($task)
             ->setPolicies($policies)
             ->setName('viewPolicy'))
         ->appendChild(
           id(new AphrontFormPolicyControl())
             ->setUser($user)
             ->setCapability(PhabricatorPolicyCapability::CAN_EDIT)
             ->setPolicyObject($task)
             ->setPolicies($policies)
             ->setName('editPolicy'));
     }
 
     if ($can_edit_projects) {
       $form
         ->appendChild(
           id(new AphrontFormTokenizerControl())
             ->setLabel(pht('Projects'))
             ->setName('projects')
             ->setValue($projects_value)
             ->setID($project_tokenizer_id)
             ->setCaption(
               javelin_tag(
                 'a',
                 array(
                   'href'        => '/project/create/',
                   'mustcapture' => true,
                   'sigil'       => 'project-create',
                 ),
                 pht('Create New Project')))
             ->setDatasource(new PhabricatorProjectDatasource()));
     }
 
     $field_list->appendFieldsToForm($form);
 
     require_celerity_resource('aphront-error-view-css');
 
     Javelin::initBehavior('project-create', array(
       'tokenizerID' => $project_tokenizer_id,
     ));
 
     $description_control = new PhabricatorRemarkupControl();
     // "Upsell" creating tasks via email in create flows if the instance is
     // configured for this awesomeness.
     $email_create = PhabricatorEnv::getEnvConfig(
       'metamta.maniphest.public-create-email');
     if (!$task->getID() && $email_create) {
       $email_hint = pht(
         'You can also create tasks by sending an email to: %s',
         phutil_tag('tt', array(), $email_create));
       $description_control->setCaption($email_hint);
     }
 
     $description_control
       ->setLabel(pht('Description'))
       ->setName('description')
       ->setID('description-textarea')
       ->setValue($task->getDescription())
       ->setUser($user);
 
     $form
       ->appendChild($description_control);
 
 
     if ($request->isAjax()) {
       $dialog = id(new AphrontDialogView())
         ->setUser($user)
         ->setWidth(AphrontDialogView::WIDTH_FULL)
         ->setTitle($header_name)
         ->appendChild(
           array(
             $error_view,
             $form->buildLayoutView(),
           ))
         ->addCancelButton($cancel_uri)
         ->addSubmitButton($button_name);
       return id(new AphrontDialogResponse())->setDialog($dialog);
     }
 
     $form
       ->appendChild(
         id(new AphrontFormSubmitControl())
           ->addCancelButton($cancel_uri)
           ->setValue($button_name));
 
     $form_box = id(new PHUIObjectBoxView())
       ->setHeaderText($header_name)
       ->setFormErrors($errors)
       ->setForm($form);
 
     $preview = id(new PHUIRemarkupPreviewPanel())
       ->setHeader(pht('Description Preview'))
       ->setControlID('description-textarea')
       ->setPreviewURI($this->getApplicationURI('task/descriptionpreview/'));
 
     if ($task->getID()) {
       $page_objects = array($task->getPHID());
     } else {
       $page_objects = array();
     }
 
     $crumbs = $this->buildApplicationCrumbs();
 
     if ($task->getID()) {
       $crumbs->addTextCrumb('T'.$task->getID(), '/T'.$task->getID());
     }
 
     $crumbs->addTextCrumb($header_name);
 
     return $this->buildApplicationPage(
       array(
         $crumbs,
         $form_box,
         $preview,
       ),
       array(
         'title' => $header_name,
         'pageObjects' => $page_objects,
       ));
   }
 
 }
diff --git a/src/applications/maniphest/editor/ManiphestTransactionEditor.php b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
index f4069bf183..aa3e07b4f6 100644
--- a/src/applications/maniphest/editor/ManiphestTransactionEditor.php
+++ b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
@@ -1,538 +1,648 @@
 <?php
 
 final class ManiphestTransactionEditor
   extends PhabricatorApplicationTransactionEditor {
 
   private $heraldEmailPHIDs = array();
 
   public function getTransactionTypes() {
     $types = parent::getTransactionTypes();
 
     $types[] = PhabricatorTransactions::TYPE_COMMENT;
     $types[] = PhabricatorTransactions::TYPE_EDGE;
     $types[] = ManiphestTransaction::TYPE_PRIORITY;
     $types[] = ManiphestTransaction::TYPE_STATUS;
     $types[] = ManiphestTransaction::TYPE_TITLE;
     $types[] = ManiphestTransaction::TYPE_DESCRIPTION;
     $types[] = ManiphestTransaction::TYPE_OWNER;
     $types[] = ManiphestTransaction::TYPE_CCS;
     $types[] = ManiphestTransaction::TYPE_SUBPRIORITY;
     $types[] = ManiphestTransaction::TYPE_PROJECT_COLUMN;
     $types[] = ManiphestTransaction::TYPE_UNBLOCK;
     $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
     $types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
 
     return $types;
   }
 
   protected function getCustomTransactionOldValue(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case ManiphestTransaction::TYPE_PRIORITY:
         if ($this->getIsNewObject()) {
           return null;
         }
         return (int)$object->getPriority();
       case ManiphestTransaction::TYPE_STATUS:
         if ($this->getIsNewObject()) {
           return null;
         }
         return $object->getStatus();
       case ManiphestTransaction::TYPE_TITLE:
         if ($this->getIsNewObject()) {
           return null;
         }
         return $object->getTitle();
       case ManiphestTransaction::TYPE_DESCRIPTION:
         if ($this->getIsNewObject()) {
           return null;
         }
         return $object->getDescription();
       case ManiphestTransaction::TYPE_OWNER:
         return nonempty($object->getOwnerPHID(), null);
       case ManiphestTransaction::TYPE_CCS:
         return array_values(array_unique($object->getCCPHIDs()));
       case ManiphestTransaction::TYPE_PROJECT_COLUMN:
         // These are pre-populated.
         return $xaction->getOldValue();
       case ManiphestTransaction::TYPE_SUBPRIORITY:
         return $object->getSubpriority();
     }
   }
 
   protected function getCustomTransactionNewValue(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case ManiphestTransaction::TYPE_PRIORITY:
         return (int)$xaction->getNewValue();
       case ManiphestTransaction::TYPE_CCS:
         return array_values(array_unique($xaction->getNewValue()));
       case ManiphestTransaction::TYPE_OWNER:
         return nonempty($xaction->getNewValue(), null);
       case ManiphestTransaction::TYPE_STATUS:
       case ManiphestTransaction::TYPE_TITLE:
       case ManiphestTransaction::TYPE_DESCRIPTION:
       case ManiphestTransaction::TYPE_SUBPRIORITY:
       case ManiphestTransaction::TYPE_PROJECT_COLUMN:
       case ManiphestTransaction::TYPE_UNBLOCK:
         return $xaction->getNewValue();
     }
   }
 
   protected function transactionHasEffect(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     $old = $xaction->getOldValue();
     $new = $xaction->getNewValue();
 
     switch ($xaction->getTransactionType()) {
       case ManiphestTransaction::TYPE_CCS:
         sort($old);
         sort($new);
         return ($old !== $new);
       case ManiphestTransaction::TYPE_PROJECT_COLUMN:
         $new_column_phids = $new['columnPHIDs'];
         $old_column_phids = $old['columnPHIDs'];
         sort($new_column_phids);
         sort($old_column_phids);
         return ($old !== $new);
     }
 
     return parent::transactionHasEffect($object, $xaction);
   }
 
   protected function applyCustomInternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case ManiphestTransaction::TYPE_PRIORITY:
         return $object->setPriority($xaction->getNewValue());
       case ManiphestTransaction::TYPE_STATUS:
         return $object->setStatus($xaction->getNewValue());
       case ManiphestTransaction::TYPE_TITLE:
         return $object->setTitle($xaction->getNewValue());
       case ManiphestTransaction::TYPE_DESCRIPTION:
         return $object->setDescription($xaction->getNewValue());
       case ManiphestTransaction::TYPE_OWNER:
         $phid = $xaction->getNewValue();
 
         // Update the "ownerOrdering" column to contain the full name of the
         // owner, if the task is assigned.
 
         $handle = null;
         if ($phid) {
           $handle = id(new PhabricatorHandleQuery())
             ->setViewer($this->getActor())
             ->withPHIDs(array($phid))
             ->executeOne();
         }
 
         if ($handle) {
           $object->setOwnerOrdering($handle->getName());
         } else {
           $object->setOwnerOrdering(null);
         }
 
         return $object->setOwnerPHID($phid);
       case ManiphestTransaction::TYPE_CCS:
         return $object->setCCPHIDs($xaction->getNewValue());
       case ManiphestTransaction::TYPE_SUBPRIORITY:
         $data = $xaction->getNewValue();
         $new_sub = $this->getNextSubpriority(
           $data['newPriority'],
           $data['newSubpriorityBase'],
           $data['direction']);
         $object->setSubpriority($new_sub);
         return;
       case ManiphestTransaction::TYPE_PROJECT_COLUMN:
         // these do external (edge) updates
         return;
     }
   }
 
   protected function expandTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     $xactions = parent::expandTransaction($object, $xaction);
     switch ($xaction->getTransactionType()) {
       case ManiphestTransaction::TYPE_SUBPRIORITY:
         $data = $xaction->getNewValue();
         $new_pri = $data['newPriority'];
         if ($new_pri != $object->getPriority()) {
           $xactions[] = id(new ManiphestTransaction())
             ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
             ->setNewValue($new_pri);
         }
         break;
       default:
         break;
     }
 
     return $xactions;
   }
 
   protected function applyCustomExternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case ManiphestTransaction::TYPE_PROJECT_COLUMN:
         $board_phid = idx($xaction->getNewValue(), 'projectPHID');
         if (!$board_phid) {
           throw new Exception(
             pht("Expected 'projectPHID' in column transaction."));
         }
 
+        $old_phids = idx($xaction->getOldValue(), 'columnPHIDs', array());
         $new_phids = idx($xaction->getNewValue(), 'columnPHIDs', array());
         if (count($new_phids) !== 1) {
           throw new Exception(
             pht("Expected exactly one 'columnPHIDs' in column transaction."));
         }
 
+        $columns = id(new PhabricatorProjectColumnQuery())
+          ->setViewer($this->requireActor())
+          ->withPHIDs($new_phids)
+          ->execute();
+        $columns = mpull($columns, null, 'getPHID');
+
         $positions = id(new PhabricatorProjectColumnPositionQuery())
           ->setViewer($this->requireActor())
           ->withObjectPHIDs(array($object->getPHID()))
           ->withBoardPHIDs(array($board_phid))
           ->execute();
 
+        $before_phid = idx($xaction->getNewValue(), 'beforePHID');
+        $after_phid = idx($xaction->getNewValue(), 'afterPHID');
+
+        if (!$before_phid && !$after_phid && ($old_phids == $new_phids)) {
+          // If we are not moving the object between columns and also not
+          // reordering the position, this is a move on some other order
+          // (like priority). We can leave the positions untouched and just
+          // bail, there's no work to be done.
+          return;
+        }
+
+        // Otherwise, we're either moving between columns or adjusting the
+        // object's position in the "natural" ordering, so we do need to update
+        // some rows.
+
         // Remove all existing column positions on the board.
 
         foreach ($positions as $position) {
           $position->delete();
         }
 
-        // Add the new column position.
+        // Add the new column positions.
 
         foreach ($new_phids as $phid) {
-          id(new PhabricatorProjectColumnPosition())
+          $column = idx($columns, $phid);
+          if (!$column) {
+            throw new Exception(
+              pht('No such column "%s" exists!', $phid));
+          }
+
+          // Load the other object positions in the column. Note that we must
+          // skip implicit column creation to avoid generating a new position
+          // if the target column is a backlog column.
+
+          $other_positions = id(new PhabricatorProjectColumnPositionQuery())
+            ->setViewer($this->requireActor())
+            ->withColumns(array($column))
+            ->withBoardPHIDs(array($board_phid))
+            ->setSkipImplicitCreate(true)
+            ->execute();
+          $other_positions = msort($other_positions, 'getOrderingKey');
+
+          // Set up the new position object. We're going to figure out the
+          // right sequence number and then persist this object with that
+          // sequence number.
+          $new_position = id(new PhabricatorProjectColumnPosition())
             ->setBoardPHID($board_phid)
-            ->setColumnPHID($phid)
-            ->setObjectPHID($object->getPHID())
-            // TODO: Do real sequence stuff.
-            ->setSequence(0)
-            ->save();
+            ->setColumnPHID($column->getPHID())
+            ->setObjectPHID($object->getPHID());
+
+          $updates = array();
+          $sequence = 0;
+
+          // If we're just dropping this into the column without any specific
+          // position information, put it at the top.
+          if (!$before_phid && !$after_phid) {
+            $new_position->setSequence($sequence)->save();
+            $sequence++;
+          }
+
+          foreach ($other_positions as $position) {
+            $object_phid = $position->getObjectPHID();
+
+            // If this is the object we're moving before and we haven't
+            // saved yet, insert here.
+            if (($before_phid == $object_phid) && !$new_position->getID()) {
+              $new_position->setSequence($sequence)->save();
+              $sequence++;
+            }
+
+            // This object goes here in the sequence; we might need to update
+            // the row.
+            if ($sequence != $position->getSequence()) {
+              $updates[$position->getID()] = $sequence;
+            }
+            $sequence++;
+
+            // If this is the object we're moving after and we haven't saved
+            // yet, insert here.
+            if (($after_phid == $object_phid) && !$new_position->getID()) {
+              $new_position->setSequence($sequence)->save();
+              $sequence++;
+            }
+          }
+
+          // We should have found a place to put it.
+          if (!$new_position->getID()) {
+            throw new Exception(
+              pht('Unable to find a place to insert object on column!'));
+          }
+
+          // If we changed other objects' column positions, bulk reorder them.
+
+          if ($updates) {
+            $position = new PhabricatorProjectColumnPosition();
+            $conn_w = $position->establishConnection('w');
+
+            $pairs = array();
+            foreach ($updates as $id => $sequence) {
+              // This is ugly because MySQL gets upset with us if it is
+              // configured strictly and we attempt inserts which can't work.
+              // We'll never actually do these inserts since they'll always
+              // collide (triggering the ON DUPLICATE KEY logic), so we just
+              // provide dummy values in order to get there.
+
+              $pairs[] = qsprintf(
+                $conn_w,
+                '(%d, %d, "", "", "")',
+                $id,
+                $sequence);
+            }
+
+            queryfx(
+              $conn_w,
+              'INSERT INTO %T (id, sequence, boardPHID, columnPHID, objectPHID)
+                VALUES %Q ON DUPLICATE KEY UPDATE sequence = VALUES(sequence)',
+              $position->getTableName(),
+              implode(', ', $pairs));
+          }
         }
         break;
       default:
         break;
     }
   }
 
   protected function applyFinalEffects(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     // When we change the status of a task, update tasks this tasks blocks
     // with a message to the effect of "alincoln resolved blocking task Txxx."
     $unblock_xaction = null;
     foreach ($xactions as $xaction) {
       switch ($xaction->getTransactionType()) {
         case ManiphestTransaction::TYPE_STATUS:
           $unblock_xaction = $xaction;
           break;
       }
     }
 
     if ($unblock_xaction !== null) {
       $blocked_phids = PhabricatorEdgeQuery::loadDestinationPHIDs(
         $object->getPHID(),
         PhabricatorEdgeConfig::TYPE_TASK_DEPENDED_ON_BY_TASK);
       if ($blocked_phids) {
         // In theory we could apply these through policies, but that seems a
         // little bit surprising. For now, use the actor's vision.
         $blocked_tasks = id(new ManiphestTaskQuery())
           ->setViewer($this->getActor())
           ->withPHIDs($blocked_phids)
           ->execute();
 
         $old = $unblock_xaction->getOldValue();
         $new = $unblock_xaction->getNewValue();
 
         foreach ($blocked_tasks as $blocked_task) {
           $unblock_xactions = array();
 
           $unblock_xactions[] = id(new ManiphestTransaction())
             ->setTransactionType(ManiphestTransaction::TYPE_UNBLOCK)
             ->setOldValue(array($object->getPHID() => $old))
             ->setNewValue(array($object->getPHID() => $new));
 
           // TODO: We should avoid notifiying users about these indirect
           // changes if they are getting a notification about the current
           // change, so you don't get a pile of extra notifications if you are
           // subscribed to this task.
 
           id(new ManiphestTransactionEditor())
             ->setActor($this->getActor())
             ->setContentSource($this->getContentSource())
             ->setContinueOnNoEffect(true)
             ->setContinueOnMissingFields(true)
             ->applyTransactions($blocked_task, $unblock_xactions);
         }
       }
     }
 
     return $xactions;
   }
 
   protected function shouldSendMail(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     $xactions = mfilter($xactions, 'shouldHide', true);
     return $xactions;
   }
 
   protected function getMailSubjectPrefix() {
     return PhabricatorEnv::getEnvConfig('metamta.maniphest.subject-prefix');
   }
 
   protected function getMailThreadID(PhabricatorLiskDAO $object) {
     return 'maniphest-task-'.$object->getPHID();
   }
 
   protected function getMailTo(PhabricatorLiskDAO $object) {
     return array(
       $object->getOwnerPHID(),
       $this->requireActor()->getPHID(),
     );
   }
 
   protected function getMailCC(PhabricatorLiskDAO $object) {
     $phids = array();
 
     foreach ($object->getCCPHIDs() as $phid) {
       $phids[] = $phid;
     }
 
     foreach (parent::getMailCC($object) as $phid) {
       $phids[] = $phid;
     }
 
     foreach ($this->heraldEmailPHIDs as $phid) {
       $phids[] = $phid;
     }
 
     return $phids;
   }
 
   protected function buildReplyHandler(PhabricatorLiskDAO $object) {
     return id(new ManiphestReplyHandler())
       ->setMailReceiver($object);
   }
 
   protected function buildMailTemplate(PhabricatorLiskDAO $object) {
     $id = $object->getID();
     $title = $object->getTitle();
 
     return id(new PhabricatorMetaMTAMail())
       ->setSubject("T{$id}: {$title}")
       ->addHeader('Thread-Topic', "T{$id}: ".$object->getOriginalTitle());
   }
 
   protected function buildMailBody(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     $body = parent::buildMailBody($object, $xactions);
 
     if ($this->getIsNewObject()) {
       $body->addTextSection(
         pht('TASK DESCRIPTION'),
         $object->getDescription());
     }
 
     $body->addTextSection(
       pht('TASK DETAIL'),
       PhabricatorEnv::getProductionURI('/T'.$object->getID()));
 
     return $body;
   }
 
   protected function shouldPublishFeedStory(
     PhabricatorLiskDAO $object,
     array $xactions) {
     return $this->shouldSendMail($object, $xactions);
   }
 
   protected function supportsSearch() {
     return true;
   }
 
   protected function shouldApplyHeraldRules(
     PhabricatorLiskDAO $object,
     array $xactions) {
     return true;
   }
 
   protected function buildHeraldAdapter(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     return id(new HeraldManiphestTaskAdapter())
       ->setTask($object);
   }
 
   protected function didApplyHeraldRules(
     PhabricatorLiskDAO $object,
     HeraldAdapter $adapter,
     HeraldTranscript $transcript) {
 
     // TODO: Convert these to transactions. The way Maniphest deals with these
     // transactions is currently unconventional and messy.
 
     $save_again = false;
     $cc_phids = $adapter->getCcPHIDs();
     if ($cc_phids) {
       $existing_cc = $object->getCCPHIDs();
       $new_cc = array_unique(array_merge($cc_phids, $existing_cc));
       $object->setCCPHIDs($new_cc);
       $object->save();
     }
 
     $this->heraldEmailPHIDs = $adapter->getEmailPHIDs();
 
     $xactions = array();
 
     $assign_phid = $adapter->getAssignPHID();
     if ($assign_phid) {
       $xactions[] = id(new ManiphestTransaction())
         ->setTransactionType(ManiphestTransaction::TYPE_OWNER)
         ->setNewValue($assign_phid);
     }
 
     $project_phids = $adapter->getProjectPHIDs();
     if ($project_phids) {
       $project_type = PhabricatorProjectObjectHasProjectEdgeType::EDGECONST;
       $xactions[] = id(new ManiphestTransaction())
         ->setTransactionType(PhabricatorTransactions::TYPE_EDGE)
         ->setMetadataValue('edge:type', $project_type)
         ->setNewValue(
           array(
             '+' => array_fuse($project_phids),
           ));
     }
 
     return $xactions;
   }
 
   protected function requireCapabilities(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     parent::requireCapabilities($object, $xaction);
 
     $app_capability_map = array(
       ManiphestTransaction::TYPE_PRIORITY =>
         ManiphestEditPriorityCapability::CAPABILITY,
       ManiphestTransaction::TYPE_STATUS =>
         ManiphestEditStatusCapability::CAPABILITY,
       ManiphestTransaction::TYPE_OWNER =>
         ManiphestEditAssignCapability::CAPABILITY,
       PhabricatorTransactions::TYPE_EDIT_POLICY =>
         ManiphestEditPoliciesCapability::CAPABILITY,
       PhabricatorTransactions::TYPE_VIEW_POLICY =>
         ManiphestEditPoliciesCapability::CAPABILITY,
     );
 
 
     $transaction_type = $xaction->getTransactionType();
 
     $app_capability = null;
     if ($transaction_type == PhabricatorTransactions::TYPE_EDGE) {
       switch ($xaction->getMetadataValue('edge:type')) {
         case PhabricatorProjectObjectHasProjectEdgeType::EDGECONST:
           $app_capability = ManiphestEditProjectsCapability::CAPABILITY;
           break;
       }
     } else {
       $app_capability = idx($app_capability_map, $transaction_type);
     }
 
     if ($app_capability) {
       $app = id(new PhabricatorApplicationQuery())
         ->setViewer($this->getActor())
         ->withClasses(array('PhabricatorManiphestApplication'))
         ->executeOne();
       PhabricatorPolicyFilter::requireCapability(
         $this->getActor(),
         $app,
         $app_capability);
     }
   }
 
   protected function adjustObjectForPolicyChecks(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     $copy = parent::adjustObjectForPolicyChecks($object, $xactions);
     foreach ($xactions as $xaction) {
       switch ($xaction->getTransactionType()) {
         case ManiphestTransaction::TYPE_OWNER:
           $copy->setOwnerPHID($xaction->getNewValue());
           break;
         default:
           continue;
       }
     }
 
     return $copy;
   }
 
   private function getNextSubpriority($pri, $sub, $dir = '>') {
     switch ($dir) {
       case '>':
         $order = 'ASC';
         break;
       case '<':
         $order = 'DESC';
         break;
       default:
         throw new Exception('$dir must be ">" or "<".');
         break;
     }
 
     if ($sub === null) {
       $base = 0;
     } else {
       $base = $sub;
     }
 
     if ($sub === null) {
       $next = id(new ManiphestTask())->loadOneWhere(
         'priority = %d ORDER BY subpriority %Q LIMIT 1',
         $pri,
         $order);
       if ($next) {
         if ($dir == '>') {
           return $next->getSubpriority() - ((double)(2 << 16));
         } else {
           return $next->getSubpriority() + ((double)(2 << 16));
         }
       }
     } else {
       $next = id(new ManiphestTask())->loadOneWhere(
         'priority = %d AND subpriority %Q %f ORDER BY subpriority %Q LIMIT 1',
         $pri,
         $dir,
         $sub,
         $order);
       if ($next) {
         return ($sub + $next->getSubpriority()) / 2;
       }
     }
 
     if ($dir == '>') {
       return $base + (double)(2 << 32);
     } else {
       return $base - (double)(2 << 32);
     }
   }
 
 }
diff --git a/src/applications/maniphest/storage/ManiphestTransaction.php b/src/applications/maniphest/storage/ManiphestTransaction.php
index 4e297534ed..ac0ada0178 100644
--- a/src/applications/maniphest/storage/ManiphestTransaction.php
+++ b/src/applications/maniphest/storage/ManiphestTransaction.php
@@ -1,842 +1,852 @@
 <?php
 
 final class ManiphestTransaction
   extends PhabricatorApplicationTransaction {
 
   const TYPE_TITLE = 'title';
   const TYPE_STATUS = 'status';
   const TYPE_DESCRIPTION = 'description';
   const TYPE_OWNER  = 'reassign';
   const TYPE_CCS = 'ccs';
   const TYPE_PROJECTS = 'projects';
   const TYPE_PRIORITY = 'priority';
   const TYPE_EDGE = 'edge';
   const TYPE_SUBPRIORITY = 'subpriority';
   const TYPE_PROJECT_COLUMN = 'projectcolumn';
 
   const TYPE_UNBLOCK = 'unblock';
 
   // NOTE: this type is deprecated. Keep it around for legacy installs
   // so any transactions render correctly.
   const TYPE_ATTACH = 'attach';
 
   public function getApplicationName() {
     return 'maniphest';
   }
 
   public function getApplicationTransactionType() {
     return ManiphestTaskPHIDType::TYPECONST;
   }
 
   public function getApplicationTransactionCommentObject() {
     return new ManiphestTransactionComment();
   }
 
   public function shouldGenerateOldValue() {
     switch ($this->getTransactionType()) {
       case self::TYPE_PROJECT_COLUMN:
       case self::TYPE_EDGE:
       case self::TYPE_UNBLOCK:
         return false;
     }
 
     return parent::shouldGenerateOldValue();
   }
 
   public function getRemarkupBlocks() {
     $blocks = parent::getRemarkupBlocks();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_DESCRIPTION:
         $blocks[] = $this->getNewValue();
         break;
     }
 
     return $blocks;
   }
 
   public function getRequiredHandlePHIDs() {
     $phids = parent::getRequiredHandlePHIDs();
 
     $new = $this->getNewValue();
     $old = $this->getOldValue();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_OWNER:
         if ($new) {
           $phids[] = $new;
         }
 
         if ($old) {
           $phids[] = $old;
         }
         break;
       case self::TYPE_CCS:
       case self::TYPE_PROJECTS:
         $phids = array_mergev(
           array(
             $phids,
             nonempty($old, array()),
             nonempty($new, array()),
           ));
         break;
       case self::TYPE_PROJECT_COLUMN:
         $phids[] = $new['projectPHID'];
         $phids[] = head($new['columnPHIDs']);
         break;
       case self::TYPE_EDGE:
         $phids = array_mergev(
           array(
             $phids,
             array_keys(nonempty($old, array())),
             array_keys(nonempty($new, array())),
           ));
         break;
       case self::TYPE_ATTACH:
         $old = nonempty($old, array());
         $new = nonempty($new, array());
         $phids = array_mergev(
           array(
             $phids,
             array_keys(idx($new, 'FILE', array())),
             array_keys(idx($old, 'FILE', array())),
           ));
         break;
       case self::TYPE_UNBLOCK:
         foreach (array_keys($new) as $phid) {
           $phids[] = $phid;
         }
         break;
     }
 
     return $phids;
   }
 
   public function shouldHide() {
     switch ($this->getTransactionType()) {
       case self::TYPE_DESCRIPTION:
       case self::TYPE_PRIORITY:
       case self::TYPE_STATUS:
         if ($this->getOldValue() === null) {
           return true;
         } else {
           return false;
         }
         break;
       case self::TYPE_SUBPRIORITY:
         return true;
+      case self::TYPE_PROJECT_COLUMN:
+        $old_cols = idx($this->getOldValue(), 'columnPHIDs');
+        $new_cols = idx($this->getNewValue(), 'columnPHIDs');
+
+        $old_cols = array_values($old_cols);
+        $new_cols = array_values($new_cols);
+        sort($old_cols);
+        sort($new_cols);
+
+        return ($old_cols === $new_cols);
     }
 
     return parent::shouldHide();
   }
 
   public function getActionStrength() {
     switch ($this->getTransactionType()) {
       case self::TYPE_TITLE:
         return 1.4;
       case self::TYPE_STATUS:
         return 1.3;
       case self::TYPE_OWNER:
         return 1.2;
       case self::TYPE_PRIORITY:
         return 1.1;
     }
 
     return parent::getActionStrength();
   }
 
 
   public function getColor() {
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_OWNER:
         if ($this->getAuthorPHID() == $new) {
           return 'green';
         } else if (!$new) {
           return 'black';
         } else if (!$old) {
           return 'green';
         } else {
           return 'green';
         }
 
       case self::TYPE_STATUS:
         $color = ManiphestTaskStatus::getStatusColor($new);
         if ($color !== null) {
           return $color;
         }
 
         if (ManiphestTaskStatus::isOpenStatus($new)) {
           return 'green';
         } else {
           return 'black';
         }
 
       case self::TYPE_PRIORITY:
         if ($old == ManiphestTaskPriority::getDefaultPriority()) {
           return 'green';
         } else if ($old > $new) {
           return 'grey';
         } else {
           return 'yellow';
         }
 
     }
 
     return parent::getColor();
   }
 
   public function getActionName() {
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_TITLE:
         if ($old === null) {
           return pht('Created');
         }
 
         return pht('Retitled');
 
       case self::TYPE_STATUS:
         $action = ManiphestTaskStatus::getStatusActionName($new);
         if ($action) {
           return $action;
         }
 
         $old_closed = ManiphestTaskStatus::isClosedStatus($old);
         $new_closed = ManiphestTaskStatus::isClosedStatus($new);
 
         if ($new_closed && !$old_closed) {
           return pht('Closed');
         } else if (!$new_closed && $old_closed) {
           return pht('Reopened');
         } else {
           return pht('Changed Status');
         }
 
       case self::TYPE_DESCRIPTION:
         return pht('Edited');
 
       case self::TYPE_OWNER:
         if ($this->getAuthorPHID() == $new) {
           return pht('Claimed');
         } else if (!$new) {
           return pht('Up For Grabs');
         } else if (!$old) {
           return pht('Assigned');
         } else {
           return pht('Reassigned');
         }
 
       case self::TYPE_CCS:
         return pht('Changed CC');
 
       case self::TYPE_PROJECTS:
         return pht('Changed Projects');
 
       case self::TYPE_PROJECT_COLUMN:
         return pht('Changed Project Column');
 
       case self::TYPE_PRIORITY:
         if ($old == ManiphestTaskPriority::getDefaultPriority()) {
           return pht('Triaged');
         } else if ($old > $new) {
           return pht('Lowered Priority');
         } else {
           return pht('Raised Priority');
         }
 
       case self::TYPE_EDGE:
       case self::TYPE_ATTACH:
         return pht('Attached');
 
       case self::TYPE_UNBLOCK:
         $old_status = head($old);
         $new_status = head($new);
 
         $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
         $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
 
         if ($old_closed && !$new_closed) {
           return pht('Block');
         } else if (!$old_closed && $new_closed) {
           return pht('Unblock');
         } else {
           return pht('Blocker');
         }
 
     }
 
     return parent::getActionName();
   }
 
   public function getIcon() {
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_OWNER:
         return 'fa-user';
 
       case self::TYPE_CCS:
         return 'fa-envelope';
 
       case self::TYPE_TITLE:
         if ($old === null) {
           return 'fa-pencil';
         }
 
         return 'fa-pencil';
 
       case self::TYPE_STATUS:
         $action = ManiphestTaskStatus::getStatusIcon($new);
         if ($action !== null) {
           return $action;
         }
 
         if (ManiphestTaskStatus::isClosedStatus($new)) {
           return 'fa-check';
         } else {
           return 'fa-pencil';
         }
 
       case self::TYPE_DESCRIPTION:
         return 'fa-pencil';
 
       case self::TYPE_PROJECTS:
         return 'fa-briefcase';
 
       case self::TYPE_PROJECT_COLUMN:
         return 'fa-columns';
 
       case self::TYPE_PRIORITY:
         if ($old == ManiphestTaskPriority::getDefaultPriority()) {
           return 'fa-arrow-right';
         } else if ($old > $new) {
           return 'fa-arrow-down';
         } else {
           return 'fa-arrow-up';
         }
 
       case self::TYPE_EDGE:
       case self::TYPE_ATTACH:
         return 'fa-thumb-tack';
 
       case self::TYPE_UNBLOCK:
         return 'fa-shield';
 
     }
 
     return parent::getIcon();
   }
 
 
 
   public function getTitle() {
     $author_phid = $this->getAuthorPHID();
 
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_TITLE:
         if ($old === null) {
           return pht(
             '%s created this task.',
             $this->renderHandleLink($author_phid));
         }
         return pht(
           '%s changed the title from "%s" to "%s".',
           $this->renderHandleLink($author_phid),
           $old,
           $new);
 
       case self::TYPE_DESCRIPTION:
         return pht(
           '%s edited the task description.',
           $this->renderHandleLink($author_phid));
 
       case self::TYPE_STATUS:
         $old_closed = ManiphestTaskStatus::isClosedStatus($old);
         $new_closed = ManiphestTaskStatus::isClosedStatus($new);
 
         $old_name = ManiphestTaskStatus::getTaskStatusName($old);
         $new_name = ManiphestTaskStatus::getTaskStatusName($new);
 
         if ($new_closed && !$old_closed) {
           if ($new == ManiphestTaskStatus::getDuplicateStatus()) {
             return pht(
               '%s closed this task as a duplicate.',
               $this->renderHandleLink($author_phid));
           } else {
             return pht(
               '%s closed this task as "%s".',
               $this->renderHandleLink($author_phid),
               $new_name);
           }
         } else if (!$new_closed && $old_closed) {
           return pht(
             '%s reopened this task as "%s".',
             $this->renderHandleLink($author_phid),
             $new_name);
         } else {
           return pht(
             '%s changed the task status from "%s" to "%s".',
             $this->renderHandleLink($author_phid),
             $old_name,
             $new_name);
         }
 
       case self::TYPE_UNBLOCK:
         $blocker_phid = key($new);
         $old_status = head($old);
         $new_status = head($new);
 
         $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
         $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
 
         $old_name = ManiphestTaskStatus::getTaskStatusName($old_status);
         $new_name = ManiphestTaskStatus::getTaskStatusName($new_status);
 
         if ($old_closed && !$new_closed) {
           return pht(
             '%s reopened blocking task %s as "%s".',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($blocker_phid),
             $new_name);
         } else if (!$old_closed && $new_closed) {
           return pht(
             '%s closed blocking task %s as "%s".',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($blocker_phid),
             $new_name);
         } else {
           return pht(
             '%s changed the status of blocking task %s from "%s" to "%s".',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($blocker_phid),
             $old_name,
             $new_name);
         }
 
       case self::TYPE_OWNER:
         if ($author_phid == $new) {
           return pht(
             '%s claimed this task.',
             $this->renderHandleLink($author_phid));
         } else if (!$new) {
           return pht(
             '%s placed this task up for grabs.',
             $this->renderHandleLink($author_phid));
         } else if (!$old) {
           return pht(
             '%s assigned this task to %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($new));
         } else {
           return pht(
             '%s reassigned this task from %s to %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($old),
             $this->renderHandleLink($new));
         }
 
       case self::TYPE_PROJECTS:
         $added = array_diff($new, $old);
         $removed = array_diff($old, $new);
         if ($added && !$removed) {
           return pht(
             '%s added %d project(s): %s',
             $this->renderHandleLink($author_phid),
             count($added),
             $this->renderHandleList($added));
         } else if ($removed && !$added) {
           return pht(
             '%s removed %d project(s): %s',
             $this->renderHandleLink($author_phid),
             count($removed),
             $this->renderHandleList($removed));
         } else if ($removed && $added) {
           return pht(
             '%s changed project(s), added %d: %s; removed %d: %s',
             $this->renderHandleLink($author_phid),
             count($added),
             $this->renderHandleList($added),
             count($removed),
             $this->renderHandleList($removed));
         } else {
           // This is hit when rendering previews.
           return pht(
             '%s changed projects...',
             $this->renderHandleLink($author_phid));
         }
 
       case self::TYPE_PRIORITY:
         $old_name = ManiphestTaskPriority::getTaskPriorityName($old);
         $new_name = ManiphestTaskPriority::getTaskPriorityName($new);
 
         if ($old == ManiphestTaskPriority::getDefaultPriority()) {
           return pht(
             '%s triaged this task as "%s" priority.',
             $this->renderHandleLink($author_phid),
             $new_name);
         } else if ($old > $new) {
           return pht(
             '%s lowered the priority of this task from "%s" to "%s".',
             $this->renderHandleLink($author_phid),
             $old_name,
             $new_name);
         } else {
           return pht(
             '%s raised the priority of this task from "%s" to "%s".',
             $this->renderHandleLink($author_phid),
             $old_name,
             $new_name);
         }
 
       case self::TYPE_CCS:
         // TODO: Remove this when we switch to subscribers. Just reuse the
         // code in the parent.
         $clone = clone $this;
         $clone->setTransactionType(PhabricatorTransactions::TYPE_SUBSCRIBERS);
         return $clone->getTitle();
 
       case self::TYPE_EDGE:
         // TODO: Remove this when we switch to real edges. Just reuse the
         // code in the parent;
         $clone = clone $this;
         $clone->setTransactionType(PhabricatorTransactions::TYPE_EDGE);
         return $clone->getTitle();
 
       case self::TYPE_ATTACH:
         $old = nonempty($old, array());
         $new = nonempty($new, array());
         $new = array_keys(idx($new, 'FILE', array()));
         $old = array_keys(idx($old, 'FILE', array()));
 
         $added = array_diff($new, $old);
         $removed = array_diff($old, $new);
         if ($added && !$removed) {
           return pht(
             '%s attached %d file(s): %s',
             $this->renderHandleLink($author_phid),
             count($added),
             $this->renderHandleList($added));
         } else if ($removed && !$added) {
           return pht(
             '%s detached %d file(s): %s',
             $this->renderHandleLink($author_phid),
             count($removed),
             $this->renderHandleList($removed));
         } else {
           return pht(
             '%s changed file(s), attached %d: %s; detached %d: %s',
             $this->renderHandleLink($author_phid),
             count($added),
             $this->renderHandleList($added),
             count($removed),
             $this->renderHandleList($removed));
         }
 
       case self::TYPE_PROJECT_COLUMN:
         $project_phid = $new['projectPHID'];
         $column_phid = head($new['columnPHIDs']);
         return pht(
           '%s moved this task to %s on the %s workboard.',
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($column_phid),
           $this->renderHandleLink($project_phid));
        break;
 
 
     }
 
     return parent::getTitle();
   }
 
   public function getTitleForFeed(PhabricatorFeedStory $story) {
     $author_phid = $this->getAuthorPHID();
     $object_phid = $this->getObjectPHID();
 
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     switch ($this->getTransactionType()) {
       case self::TYPE_TITLE:
         if ($old === null) {
           return pht(
             '%s created %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid));
         }
 
         return pht(
           '%s renamed %s from "%s" to "%s".',
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($object_phid),
           $old,
           $new);
 
       case self::TYPE_DESCRIPTION:
         return pht(
           '%s edited the description of %s.',
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($object_phid));
 
       case self::TYPE_STATUS:
         $old_closed = ManiphestTaskStatus::isClosedStatus($old);
         $new_closed = ManiphestTaskStatus::isClosedStatus($new);
 
         $old_name = ManiphestTaskStatus::getTaskStatusName($old);
         $new_name = ManiphestTaskStatus::getTaskStatusName($new);
 
         if ($new_closed && !$old_closed) {
           if ($new == ManiphestTaskStatus::getDuplicateStatus()) {
             return pht(
               '%s closed %s as a duplicate.',
               $this->renderHandleLink($author_phid),
               $this->renderHandleLink($object_phid));
           } else {
             return pht(
               '%s closed %s as "%s".',
               $this->renderHandleLink($author_phid),
               $this->renderHandleLink($object_phid),
               $new_name);
           }
         } else if (!$new_closed && $old_closed) {
           return pht(
             '%s reopened %s as "%s".',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $new_name);
         } else {
           return pht(
             '%s changed the status of %s from "%s" to "%s".',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $old_name,
             $new_name);
         }
 
       case self::TYPE_UNBLOCK:
 
         // TODO: We should probably not show these in feed; they're highly
         // redundant. For now, just use the normal titles. Right now, we can't
         // publish something to noficiations without also publishing it to feed.
         // Fix that, then stop these from rendering in feed only.
 
         break;
 
 
       case self::TYPE_OWNER:
         if ($author_phid == $new) {
           return pht(
             '%s claimed %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid));
         } else if (!$new) {
           return pht(
             '%s placed %s up for grabs.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid));
         } else if (!$old) {
           return pht(
             '%s assigned %s to %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $this->renderHandleLink($new));
         } else {
           return pht(
             '%s reassigned %s from %s to %s.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $this->renderHandleLink($old),
             $this->renderHandleLink($new));
         }
 
       case self::TYPE_PROJECTS:
         $added = array_diff($new, $old);
         $removed = array_diff($old, $new);
         if ($added && !$removed) {
           return pht(
             '%s added %d project(s) to %s: %s',
             $this->renderHandleLink($author_phid),
             count($added),
             $this->renderHandleLink($object_phid),
             $this->renderHandleList($added));
         } else if ($removed && !$added) {
           return pht(
             '%s removed %d project(s) from %s: %s',
             $this->renderHandleLink($author_phid),
             count($removed),
             $this->renderHandleLink($object_phid),
             $this->renderHandleList($removed));
         } else if ($removed && $added) {
           return pht(
             '%s changed project(s) of %s, added %d: %s; removed %d: %s',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             count($added),
             $this->renderHandleList($added),
             count($removed),
             $this->renderHandleList($removed));
         }
 
       case self::TYPE_PRIORITY:
         $old_name = ManiphestTaskPriority::getTaskPriorityName($old);
         $new_name = ManiphestTaskPriority::getTaskPriorityName($new);
 
         if ($old == ManiphestTaskPriority::getDefaultPriority()) {
           return pht(
             '%s triaged %s as "%s" priority.',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $new_name);
         } else if ($old > $new) {
           return pht(
             '%s lowered the priority of %s from "%s" to "%s".',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $old_name,
             $new_name);
         } else {
           return pht(
             '%s raised the priority of %s from "%s" to "%s".',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             $old_name,
             $new_name);
         }
 
       case self::TYPE_CCS:
         // TODO: Remove this when we switch to subscribers. Just reuse the
         // code in the parent.
         $clone = clone $this;
         $clone->setTransactionType(PhabricatorTransactions::TYPE_SUBSCRIBERS);
         return $clone->getTitleForFeed($story);
 
       case self::TYPE_EDGE:
         // TODO: Remove this when we switch to real edges. Just reuse the
         // code in the parent;
         $clone = clone $this;
         $clone->setTransactionType(PhabricatorTransactions::TYPE_EDGE);
         return $clone->getTitleForFeed($story);
 
       case self::TYPE_ATTACH:
         $old = nonempty($old, array());
         $new = nonempty($new, array());
         $new = array_keys(idx($new, 'FILE', array()));
         $old = array_keys(idx($old, 'FILE', array()));
 
         $added = array_diff($new, $old);
         $removed = array_diff($old, $new);
         if ($added && !$removed) {
           return pht(
             '%s attached %d file(s) of %s: %s',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             count($added),
             $this->renderHandleList($added));
         } else if ($removed && !$added) {
           return pht(
             '%s detached %d file(s) of %s: %s',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             count($removed),
             $this->renderHandleList($removed));
         } else {
           return pht(
             '%s changed file(s) for %s, attached %d: %s; detached %d: %s',
             $this->renderHandleLink($author_phid),
             $this->renderHandleLink($object_phid),
             count($added),
             $this->renderHandleList($added),
             count($removed),
             $this->renderHandleList($removed));
         }
 
       case self::TYPE_PROJECT_COLUMN:
         $project_phid = $new['projectPHID'];
         $column_phid = head($new['columnPHIDs']);
         return pht(
           '%s moved %s to %s on the %s workboard.',
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($object_phid),
           $this->renderHandleLink($column_phid),
           $this->renderHandleLink($project_phid));
        break;
     }
 
     return parent::getTitleForFeed($story);
   }
 
   public function hasChangeDetails() {
     switch ($this->getTransactionType()) {
       case self::TYPE_DESCRIPTION:
         return true;
     }
     return parent::hasChangeDetails();
   }
 
   public function renderChangeDetails(PhabricatorUser $viewer) {
     return $this->renderTextCorpusChangeDetails(
       $viewer,
       $this->getOldValue(),
       $this->getNewValue());
   }
 
   public function getMailTags() {
     $tags = array();
     switch ($this->getTransactionType()) {
       case self::TYPE_STATUS:
         $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_STATUS;
         break;
       case self::TYPE_OWNER:
         $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_OWNER;
         break;
       case self::TYPE_CCS:
         $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_CC;
         break;
       case PhabricatorTransactions::TYPE_EDGE:
         switch ($this->getMetadataValue('edge:type')) {
           case PhabricatorProjectObjectHasProjectEdgeType::EDGECONST:
             $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_PROJECTS;
             break;
           default:
             $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_OTHER;
             break;
         }
         break;
       case self::TYPE_PRIORITY:
         $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_PRIORITY;
         break;
       case PhabricatorTransactions::TYPE_COMMENT:
         $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_COMMENT;
         break;
       default:
         $tags[] = MetaMTANotificationType::TYPE_MANIPHEST_OTHER;
         break;
     }
     return $tags;
   }
 
   public function getNoEffectDescription() {
 
     switch ($this->getTransactionType()) {
       case self::TYPE_STATUS:
         return pht('The task already has the selected status.');
       case self::TYPE_OWNER:
         return pht('The task already has the selected owner.');
       case self::TYPE_PROJECTS:
         return pht('The task is already associated with those projects.');
       case self::TYPE_PRIORITY:
         return pht('The task already has the selected priority.');
     }
 
     return parent::getNoEffectDescription();
   }
 
 }
diff --git a/src/applications/project/controller/PhabricatorProjectBoardViewController.php b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
index 25ffbeae37..66cb1b5de4 100644
--- a/src/applications/project/controller/PhabricatorProjectBoardViewController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
@@ -1,554 +1,571 @@
 <?php
 
 final class PhabricatorProjectBoardViewController
   extends PhabricatorProjectBoardController {
 
   private $id;
   private $slug;
   private $handles;
   private $queryKey;
   private $filter;
   private $sortKey;
   private $showHidden;
 
   public function shouldAllowPublic() {
     return true;
   }
 
   public function willProcessRequest(array $data) {
     $this->id = idx($data, 'id');
     $this->slug = idx($data, 'slug');
     $this->queryKey = idx($data, 'queryKey');
     $this->filter = (bool)idx($data, 'filter');
   }
 
   public function processRequest() {
     $request = $this->getRequest();
     $viewer = $request->getUser();
 
     $show_hidden = $request->getBool('hidden');
     $this->showHidden = $show_hidden;
 
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
       ->needImages(true);
     if ($this->slug) {
       $project->withSlugs(array($this->slug));
     } else {
       $project->withIDs(array($this->id));
     }
     $project = $project->executeOne();
     if (!$project) {
       return new Aphront404Response();
     }
 
     $this->setProject($project);
     $this->id = $project->getID();
 
     $sort_key = $request->getStr('order');
     switch ($sort_key) {
       case PhabricatorProjectColumn::ORDER_NATURAL:
       case PhabricatorProjectColumn::ORDER_PRIORITY:
         break;
       default:
         $sort_key = PhabricatorProjectColumn::DEFAULT_ORDER;
         break;
     }
     $this->sortKey = $sort_key;
 
     $column_query = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array($project->getPHID()));
 
     if (!$show_hidden) {
       $column_query->withStatuses(
         array(PhabricatorProjectColumn::STATUS_ACTIVE));
     }
 
     $columns = $column_query->execute();
     $columns = mpull($columns, null, 'getSequence');
 
     if (empty($columns[0])) {
       switch ($request->getStr('initialize-type')) {
         case 'backlog-only':
           $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
             $column = PhabricatorProjectColumn::initializeNewColumn($viewer)
               ->setSequence(0)
               ->setProjectPHID($project->getPHID())
               ->save();
             $column->attachProject($project);
             $columns[0] = $column;
           unset($unguarded);
           break;
         case 'import':
           return id(new AphrontRedirectResponse())
             ->setURI(
               $this->getApplicationURI('board/'.$project->getID().'/import/'));
           break;
         default:
           return $this->initializeWorkboardDialog($project);
           break;
       }
     }
 
     ksort($columns);
 
     $board_uri = $this->getApplicationURI('board/'.$project->getID().'/');
 
     $engine = id(new ManiphestTaskSearchEngine())
       ->setViewer($viewer)
       ->setBaseURI($board_uri)
       ->setIsBoardView(true);
 
     if ($request->isFormPost()) {
       $saved = $engine->buildSavedQueryFromRequest($request);
       $engine->saveQuery($saved);
       return id(new AphrontRedirectResponse())->setURI(
         $this->getURIWithState(
           $engine->getQueryResultsPageURI($saved->getQueryKey())));
     }
 
     $query_key = $this->queryKey;
     if (!$query_key) {
       $query_key = 'open';
     }
     $this->queryKey = $query_key;
 
     $custom_query = null;
     if ($engine->isBuiltinQuery($query_key)) {
       $saved = $engine->buildSavedQueryFromBuiltin($query_key);
     } else {
       $saved = id(new PhabricatorSavedQueryQuery())
         ->setViewer($viewer)
         ->withQueryKeys(array($query_key))
         ->executeOne();
 
       if (!$saved) {
         return new Aphront404Response();
       }
 
       $custom_query = $saved;
     }
 
     if ($this->filter) {
       $filter_form = id(new AphrontFormView())
         ->setUser($viewer);
       $engine->buildSearchForm($filter_form, $saved);
 
       return $this->newDialog()
         ->setWidth(AphrontDialogView::WIDTH_FULL)
         ->setTitle(pht('Advanced Filter'))
         ->appendChild($filter_form->buildLayoutView())
         ->setSubmitURI($board_uri)
         ->addSubmitButton(pht('Apply Filter'))
         ->addCancelButton($board_uri);
     }
 
     $task_query = $engine->buildQueryFromSavedQuery($saved);
 
     $tasks = $task_query
       ->addWithAllProjects(array($project->getPHID()))
       ->setOrderBy(ManiphestTaskQuery::ORDER_PRIORITY)
       ->setViewer($viewer)
       ->execute();
     $tasks = mpull($tasks, null, 'getPHID');
 
     if ($tasks) {
       $positions = id(new PhabricatorProjectColumnPositionQuery())
         ->setViewer($viewer)
         ->withObjectPHIDs(mpull($tasks, 'getPHID'))
         ->withColumns($columns)
         ->execute();
       $positions = mpull($positions, null, 'getObjectPHID');
     } else {
       $positions = array();
     }
 
     $task_map = array();
     $default_phid = $columns[0]->getPHID();
     foreach ($tasks as $task) {
       $task_phid = $task->getPHID();
 
       $column_phid = null;
       if (isset($positions[$task_phid])) {
         $column_phid = $positions[$task_phid]->getColumnPHID();
       }
       $column_phid = nonempty($column_phid, $default_phid);
 
       $task_map[$column_phid][] = $task_phid;
     }
 
+    // If we're showing the board in "natural" order, sort columns by their
+    // column positions.
+    if ($this->sortKey == PhabricatorProjectColumn::ORDER_NATURAL) {
+      foreach ($task_map as $column_phid => $task_phids) {
+        $order = array();
+        foreach ($task_phids as $task_phid) {
+          if (isset($positions[$task_phid])) {
+            $order[$task_phid] = $positions[$task_phid]->getOrderingKey();
+          } else {
+            $order[$task_phid] = 0;
+          }
+        }
+        asort($order);
+        $task_map[$column_phid] = array_keys($order);
+      }
+    }
+
     $task_can_edit_map = id(new PhabricatorPolicyFilter())
       ->setViewer($viewer)
       ->requireCapabilities(array(PhabricatorPolicyCapability::CAN_EDIT))
       ->apply($tasks);
 
     $board_id = celerity_generate_unique_node_id();
 
     $board = id(new PHUIWorkboardView())
       ->setUser($viewer)
       ->setID($board_id);
 
     $this->initBehavior(
       'project-boards',
       array(
         'boardID' => $board_id,
         'projectPHID' => $project->getPHID(),
         'moveURI' => $this->getApplicationURI('move/'.$project->getID().'/'),
         'createURI' => '/maniphest/task/create/',
         'order' => $this->sortKey,
       ));
 
     $this->handles = ManiphestTaskListView::loadTaskHandles($viewer, $tasks);
 
     foreach ($columns as $column) {
       $panel = id(new PHUIWorkpanelView())
         ->setHeader($column->getDisplayName())
         ->setHeaderColor($column->getHeaderColor());
 
       $panel->setEditURI($board_uri.'column/'.$column->getID().'/');
 
       $panel->setHeaderAction(id(new PHUIIconView())
         ->setIconFont('fa-plus')
         ->setHref('/maniphest/task/create/')
         ->addSigil('column-add-task')
         ->setMetadata(
           array('columnPHID' => $column->getPHID())));
 
       $cards = id(new PHUIObjectItemListView())
         ->setUser($viewer)
         ->setFlush(true)
         ->setAllowEmptyList(true)
         ->addSigil('project-column')
         ->setMetadata(
           array(
             'columnPHID' => $column->getPHID(),
           ));
 
       $task_phids = idx($task_map, $column->getPHID(), array());
       foreach (array_select_keys($tasks, $task_phids) as $task) {
         $owner = null;
         if ($task->getOwnerPHID()) {
           $owner = $this->handles[$task->getOwnerPHID()];
         }
         $can_edit = idx($task_can_edit_map, $task->getPHID(), false);
         $cards->addItem(id(new ProjectBoardTaskCard())
           ->setViewer($viewer)
           ->setTask($task)
           ->setOwner($owner)
           ->setCanEdit($can_edit)
           ->getItem());
       }
       $panel->setCards($cards);
 
       if (!$task_phids) {
         $cards->addClass('project-column-empty');
       }
 
       $board->addPanel($panel);
     }
 
     Javelin::initBehavior(
       'boards-dropdown',
       array());
 
     $sort_menu = $this->buildSortMenu(
       $viewer,
       $sort_key);
 
     $filter_menu = $this->buildFilterMenu(
       $viewer,
       $custom_query,
       $engine,
       $query_key);
 
     $manage_menu = $this->buildManageMenu($project, $show_hidden);
 
     $header_link = phutil_tag(
       'a',
       array(
         'href' => $this->getApplicationURI('view/'.$project->getID().'/')
       ),
       $project->getName());
 
     $header = id(new PHUIHeaderView())
       ->setHeader($header_link)
       ->setUser($viewer)
       ->setNoBackground(true)
       ->setImage($project->getProfileImageURI())
       ->setImageURL($this->getApplicationURI('view/'.$project->getID().'/'))
       ->addActionLink($sort_menu)
       ->addActionLink($filter_menu)
       ->addActionLink($manage_menu)
       ->setPolicyObject($project);
 
     $board_box = id(new PHUIBoxView())
       ->appendChild($board)
       ->addClass('project-board-wrapper');
 
     return $this->buildApplicationPage(
       array(
         $header,
         $board_box,
       ),
       array(
         'title' => pht('%s Board', $project->getName()),
       ));
   }
 
   private function buildSortMenu(
     PhabricatorUser $viewer,
     $sort_key) {
 
     $sort_icon = id(new PHUIIconView())
       ->setIconFont('fa-sort-amount-asc bluegrey');
 
     $named = array(
       PhabricatorProjectColumn::ORDER_NATURAL => pht('Natural'),
       PhabricatorProjectColumn::ORDER_PRIORITY => pht('Sort by Priority'),
     );
 
     $base_uri = $this->getURIWithState();
 
     $items = array();
     foreach ($named as $key => $name) {
       $is_selected = ($key == $sort_key);
       if ($is_selected) {
         $active_order = $name;
       }
 
       $item = id(new PhabricatorActionView())
         ->setIcon('fa-sort-amount-asc')
         ->setSelected($is_selected)
         ->setName($name);
 
       $uri = $base_uri->alter('order', $key);
       $item->setHref($uri);
 
       $items[] = $item;
     }
 
     $sort_menu = id(new PhabricatorActionListView())
       ->setUser($viewer);
     foreach ($items as $item) {
       $sort_menu->addAction($item);
     }
 
     $sort_button = id(new PHUIButtonView())
       ->setText(pht('Sort: %s', $active_order))
       ->setIcon($sort_icon)
       ->setTag('a')
       ->setHref('#')
       ->addSigil('boards-dropdown-menu')
       ->setMetadata(
         array(
           'items' => hsprintf('%s', $sort_menu),
         ));
 
     return $sort_button;
   }
   private function buildFilterMenu(
     PhabricatorUser $viewer,
     $custom_query,
     PhabricatorApplicationSearchEngine $engine,
     $query_key) {
 
     $filter_icon = id(new PHUIIconView())
       ->setIconFont('fa-search-plus bluegrey');
 
     $named = array(
       'open' => pht('Open Tasks'),
       'all' => pht('All Tasks'),
     );
 
     if ($viewer->isLoggedIn()) {
       $named['assigned'] = pht('Assigned to Me');
     }
 
     if ($custom_query) {
       $named[$custom_query->getQueryKey()] = pht('Custom Filter');
     }
 
     $items = array();
     foreach ($named as $key => $name) {
       $is_selected = ($key == $query_key);
       if ($is_selected) {
         $active_filter = $name;
       }
 
       $is_custom = false;
       if ($custom_query) {
         $is_custom = ($key == $custom_query->getQueryKey());
       }
 
       $item = id(new PhabricatorActionView())
         ->setIcon('fa-search')
         ->setSelected($is_selected)
         ->setName($name);
 
       if ($is_custom) {
         $uri = $this->getApplicationURI(
           'board/'.$this->id.'/filter/query/'.$key.'/');
         $item->setWorkflow(true);
       } else {
         $uri = $engine->getQueryResultsPageURI($key);
       }
 
       $uri = $this->getURIWithState($uri);
       $item->setHref($uri);
 
       $items[] = $item;
     }
 
     $items[] = id(new PhabricatorActionView())
       ->setIcon('fa-cog')
       ->setHref($this->getApplicationURI('board/'.$this->id.'/filter/'))
       ->setWorkflow(true)
       ->setName(pht('Advanced Filter...'));
 
     $filter_menu = id(new PhabricatorActionListView())
         ->setUser($viewer);
     foreach ($items as $item) {
       $filter_menu->addAction($item);
     }
 
     $filter_button = id(new PHUIButtonView())
       ->setText(pht('Filter: %s', $active_filter))
       ->setIcon($filter_icon)
       ->setTag('a')
       ->setHref('#')
       ->addSigil('boards-dropdown-menu')
       ->setMetadata(
         array(
           'items' => hsprintf('%s', $filter_menu),
         ));
 
     return $filter_button;
   }
 
   private function buildManageMenu(
     PhabricatorProject $project,
     $show_hidden) {
 
     $request = $this->getRequest();
     $viewer = $request->getUser();
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $project,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $manage_icon = id(new PHUIIconView())
       ->setIconFont('fa-cog bluegrey');
 
     $manage_items = array();
 
     $manage_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-plus')
       ->setName(pht('Add Column'))
       ->setHref($this->getApplicationURI('board/'.$this->id.'/edit/'))
       ->setDisabled(!$can_edit)
       ->setWorkflow(!$can_edit);
 
     $manage_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-exchange')
       ->setName(pht('Reorder Columns'))
       ->setHref($this->getApplicationURI('board/'.$this->id.'/reorder/'))
       ->setDisabled(!$can_edit)
       ->setWorkflow(true);
 
     if ($show_hidden) {
       $hidden_uri = $this->getURIWithState()
         ->setQueryParam('hidden', null);
       $hidden_icon = 'fa-eye-slash';
       $hidden_text = pht('Hide Hidden Columns');
     } else {
       $hidden_uri = $this->getURIWithState()
         ->setQueryParam('hidden', 'true');
       $hidden_icon = 'fa-eye';
       $hidden_text = pht('Show Hidden Columns');
     }
 
     $manage_items[] = id(new PhabricatorActionView())
       ->setIcon($hidden_icon)
       ->setName($hidden_text)
       ->setHref($hidden_uri);
 
     $manage_menu = id(new PhabricatorActionListView())
         ->setUser($viewer);
     foreach ($manage_items as $item) {
       $manage_menu->addAction($item);
     }
 
     $manage_button = id(new PHUIButtonView())
       ->setText(pht('Manage Board'))
       ->setIcon($manage_icon)
       ->setTag('a')
       ->setHref('#')
       ->addSigil('boards-dropdown-menu')
       ->setMetadata(
         array(
           'items' => hsprintf('%s', $manage_menu),
         ));
 
     return $manage_button;
   }
 
   private function initializeWorkboardDialog(PhabricatorProject $project) {
 
     $instructions = pht('This workboard has not been setup yet.');
     $new_selector = id(new AphrontFormRadioButtonControl())
       ->setName('initialize-type')
       ->setValue('backlog-only')
       ->addButton(
         'backlog-only',
         pht('New Empty Board'),
         pht('Create a new board with just a backlog column.'))
       ->addButton(
         'import',
         pht('Import Columns'),
         pht('Import board columns from another project.'));
 
     $dialog = id(new AphrontDialogView())
       ->setUser($this->getRequest()->getUser())
       ->setTitle(pht('New Workboard'))
       ->addSubmitButton('Continue')
       ->addCancelButton($this->getApplicationURI('view/'.$project->getID().'/'))
       ->appendParagraph($instructions)
       ->appendChild($new_selector);
 
     return id(new AphrontDialogResponse())
       ->setDialog($dialog);
   }
 
 
   /**
    * Add current state parameters (like order and the visibility of hidden
    * columns) to a URI.
    *
    * This allows actions which toggle or adjust one piece of state to keep
    * the rest of the board state persistent. If no URI is provided, this method
    * starts with the request URI.
    *
    * @param string|null   URI to add state parameters to.
    * @return PhutilURI    URI with state parameters.
    */
   private function getURIWithState($base = null) {
     if ($base === null) {
       $base = $this->getRequest()->getRequestURI();
     }
 
     $base = new PhutilURI($base);
 
     if ($this->sortKey != PhabricatorProjectColumn::DEFAULT_ORDER) {
       $base->setQueryParam('order', $this->sortKey);
     } else {
       $base->setQueryParam('order', null);
     }
 
     $base->setQueryParam('hidden', $this->showHidden ? 'true' : null);
 
     return $base;
   }
 
 }
diff --git a/src/applications/project/controller/PhabricatorProjectMoveController.php b/src/applications/project/controller/PhabricatorProjectMoveController.php
index d6c6b44118..5302877093 100644
--- a/src/applications/project/controller/PhabricatorProjectMoveController.php
+++ b/src/applications/project/controller/PhabricatorProjectMoveController.php
@@ -1,165 +1,176 @@
 <?php
 
 final class PhabricatorProjectMoveController
   extends PhabricatorProjectController {
 
   private $id;
 
   public function willProcessRequest(array $data) {
     $this->id = $data['id'];
   }
 
   public function processRequest() {
     $request = $this->getRequest();
     $viewer = $request->getUser();
 
     $column_phid = $request->getStr('columnPHID');
     $object_phid = $request->getStr('objectPHID');
     $after_phid = $request->getStr('afterPHID');
     $before_phid = $request->getStr('beforePHID');
+    $order = $request->getStr('order', PhabricatorProjectColumn::DEFAULT_ORDER);
+
 
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
         ))
       ->withIDs(array($this->id))
       ->executeOne();
     if (!$project) {
       return new Aphront404Response();
     }
 
     $object = id(new PhabricatorObjectQuery())
       ->setViewer($viewer)
       ->withPHIDs(array($object_phid))
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
           PhabricatorPolicyCapability::CAN_EDIT,
         ))
       ->executeOne();
 
     if (!$object) {
       return new Aphront404Response();
     }
 
     $columns = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array($project->getPHID()))
       ->execute();
 
     $columns = mpull($columns, null, 'getPHID');
     $column = idx($columns, $column_phid);
     if (!$column) {
       // User is trying to drop this object into a nonexistent column, just kick
       // them out.
       return new Aphront404Response();
     }
 
     $positions = id(new PhabricatorProjectColumnPositionQuery())
       ->setViewer($viewer)
       ->withColumns($columns)
       ->withObjectPHIDs(array($object_phid))
       ->execute();
 
     $xactions = array();
 
+    if ($order == PhabricatorProjectColumn::ORDER_NATURAL) {
+      $order_params = array(
+        'afterPHID' => $after_phid,
+        'beforePHID' => $before_phid,
+      );
+    } else {
+      $order_params = array();
+    }
+
     $xactions[] = id(new ManiphestTransaction())
       ->setTransactionType(ManiphestTransaction::TYPE_PROJECT_COLUMN)
       ->setNewValue(
         array(
           'columnPHIDs' => array($column->getPHID()),
           'projectPHID' => $column->getProjectPHID(),
-        ))
+        ) + $order_params)
       ->setOldValue(
         array(
           'columnPHIDs' => mpull($positions, 'getColumnPHID'),
           'projectPHID' => $column->getProjectPHID(),
         ));
 
     $task_phids = array();
     if ($after_phid) {
       $task_phids[] = $after_phid;
     }
     if ($before_phid) {
       $task_phids[] = $before_phid;
     }
 
-    if ($task_phids) {
+    if ($task_phids && ($order == PhabricatorProjectColumn::ORDER_PRIORITY)) {
       $tasks = id(new ManiphestTaskQuery())
         ->setViewer($viewer)
         ->withPHIDs($task_phids)
         ->requireCapabilities(
           array(
             PhabricatorPolicyCapability::CAN_VIEW,
             PhabricatorPolicyCapability::CAN_EDIT,
           ))
         ->execute();
       if (count($tasks) != count($task_phids)) {
         return new Aphront404Response();
       }
       $tasks = mpull($tasks, null, 'getPHID');
 
       $a_task = idx($tasks, $after_phid);
       $b_task = idx($tasks, $before_phid);
 
       if ($a_task &&
          (($a_task->getPriority() < $object->getPriority()) ||
           ($a_task->getPriority() == $object->getPriority() &&
            $a_task->getSubpriority() >= $object->getSubpriority()))) {
 
         $after_pri = $a_task->getPriority();
         $after_sub = $a_task->getSubpriority();
 
         $xactions[] = id(new ManiphestTransaction())
           ->setTransactionType(ManiphestTransaction::TYPE_SUBPRIORITY)
           ->setNewValue(array(
             'newPriority' => $after_pri,
             'newSubpriorityBase' => $after_sub,
             'direction' => '>'));
 
        } else if ($b_task &&
                  (($b_task->getPriority() > $object->getPriority()) ||
                   ($b_task->getPriority() == $object->getPriority() &&
                    $b_task->getSubpriority() <= $object->getSubpriority()))) {
 
         $before_pri = $b_task->getPriority();
         $before_sub = $b_task->getSubpriority();
 
         $xactions[] = id(new ManiphestTransaction())
           ->setTransactionType(ManiphestTransaction::TYPE_SUBPRIORITY)
           ->setNewValue(array(
             'newPriority' => $before_pri,
             'newSubpriorityBase' => $before_sub,
             'direction' => '<'));
       }
    }
 
     $editor = id(new ManiphestTransactionEditor())
       ->setActor($viewer)
       ->setContinueOnMissingFields(true)
       ->setContinueOnNoEffect(true)
       ->setContentSourceFromRequest($request);
 
     $editor->applyTransactions($object, $xactions);
 
     $owner = null;
     if ($object->getOwnerPHID()) {
       $owner = id(new PhabricatorHandleQuery())
         ->setViewer($viewer)
         ->withPHIDs(array($object->getOwnerPHID()))
         ->executeOne();
     }
     $card = id(new ProjectBoardTaskCard())
       ->setViewer($viewer)
       ->setTask($object)
       ->setOwner($owner)
       ->setCanEdit(true)
       ->getItem();
 
     return id(new AphrontAjaxResponse())->setContent(
       array('task' => $card));
  }
 
 }
diff --git a/src/applications/project/query/PhabricatorProjectColumnPositionQuery.php b/src/applications/project/query/PhabricatorProjectColumnPositionQuery.php
index 60e9b2de58..87bd87ffd3 100644
--- a/src/applications/project/query/PhabricatorProjectColumnPositionQuery.php
+++ b/src/applications/project/query/PhabricatorProjectColumnPositionQuery.php
@@ -1,290 +1,306 @@
 <?php
 
 final class PhabricatorProjectColumnPositionQuery
   extends PhabricatorCursorPagedPolicyAwareQuery {
 
   private $ids;
   private $boardPHIDs;
   private $objectPHIDs;
   private $columns;
 
   private $needColumns;
+  private $skipImplicitCreate;
 
   public function withIDs(array $ids) {
     $this->ids = $ids;
     return $this;
   }
 
   public function withBoardPHIDs(array $board_phids) {
     $this->boardPHIDs = $board_phids;
     return $this;
   }
 
   public function withObjectPHIDs(array $object_phids) {
     $this->objectPHIDs = $object_phids;
     return $this;
   }
 
   /**
    * Find objects in specific columns.
    *
    * NOTE: Using this method activates logic which constructs virtual
    * column positions for objects not in any column, if you pass a default
    * column. Normally these results are not returned.
    *
    * @param list<PhabricatorProjectColumn> Columns to look for objects in.
    * @return this
    */
   public function withColumns(array $columns) {
     assert_instances_of($columns, 'PhabricatorProjectColumn');
     $this->columns = $columns;
     return $this;
   }
 
   public function needColumns($need_columns) {
     $this->needColumns = true;
     return $this;
   }
 
+
+  /**
+   * Skip implicit creation of column positions which are implied but do not
+   * yet exist.
+   *
+   * This is primarily useful internally.
+   *
+   * @param bool  True to skip implicit creation of column positions.
+   * @return this
+   */
+  public function setSkipImplicitCreate($skip) {
+    $this->skipImplicitCreate = $skip;
+    return $this;
+  }
+
   // NOTE: For now, boards are always attached to projects. However, they might
   // not be in the future. This generalization just anticipates a future where
   // we let other types of objects (like users) have boards, or let boards
   // contain other types of objects.
 
   private function newPositionObject() {
     return new PhabricatorProjectColumnPosition();
   }
 
   private function newColumnQuery() {
     return new PhabricatorProjectColumnQuery();
   }
 
   private function getBoardMembershipEdgeTypes() {
     return array(
       PhabricatorProjectProjectHasObjectEdgeType::EDGECONST,
     );
   }
 
   private function getBoardMembershipPHIDTypes() {
     return array(
       ManiphestTaskPHIDType::TYPECONST,
     );
   }
 
   protected function loadPage() {
     $table = $this->newPositionObject();
     $conn_r = $table->establishConnection('r');
 
     // We're going to find results by combining two queries: one query finds
     // objects on a board column, while the other query finds objects not on
     // any board column and virtually puts them on the default column.
 
     $unions = array();
 
     // First, find all the stuff that's actually on a column.
 
     $unions[] = qsprintf(
       $conn_r,
       'SELECT * FROM %T %Q',
       $table->getTableName(),
       $this->buildWhereClause($conn_r));
 
     // If we have a default column, find all the stuff that's not in any
     // column and put it in the default column.
 
     $must_type_filter = false;
-    if ($this->columns) {
+    if ($this->columns && !$this->skipImplicitCreate) {
       $default_map = array();
       foreach ($this->columns as $column) {
         if ($column->isDefaultColumn()) {
           $default_map[$column->getProjectPHID()] = $column->getPHID();
         }
       }
 
       if ($default_map) {
         $where = array();
 
         // Find the edges attached to the boards we have default columns for.
 
         $where[] = qsprintf(
           $conn_r,
           'e.src IN (%Ls)',
           array_keys($default_map));
 
         // Find only edges which describe a board relationship.
 
         $where[] = qsprintf(
           $conn_r,
           'e.type IN (%Ld)',
           $this->getBoardMembershipEdgeTypes());
 
         if ($this->boardPHIDs !== null) {
           // This should normally be redundant, but construct it anyway if
           // the caller has told us to.
           $where[] = qsprintf(
             $conn_r,
             'e.src IN (%Ls)',
             $this->boardPHIDs);
         }
 
         if ($this->objectPHIDs !== null) {
           $where[] = qsprintf(
             $conn_r,
             'e.dst IN (%Ls)',
             $this->objectPHIDs);
         }
 
         $where[] = qsprintf(
           $conn_r,
           'p.id IS NULL');
 
         $where = $this->formatWhereClause($where);
 
         $unions[] = qsprintf(
           $conn_r,
           'SELECT NULL id, e.src boardPHID, NULL columnPHID, e.dst objectPHID,
               0 sequence
             FROM %T e LEFT JOIN %T p
               ON e.src = p.boardPHID AND e.dst = p.objectPHID
               %Q',
           PhabricatorEdgeConfig::TABLE_NAME_EDGE,
           $table->getTableName(),
           $where);
 
         $must_type_filter = true;
       }
     }
 
     $data = queryfx_all(
       $conn_r,
       '%Q %Q %Q',
       implode(' UNION ALL ', $unions),
       $this->buildOrderClause($conn_r),
       $this->buildLimitClause($conn_r));
 
     // If we've picked up objects not in any column, we need to filter out any
     // matched objects which have the wrong edge type.
     if ($must_type_filter) {
       $allowed_types = array_fuse($this->getBoardMembershipPHIDTypes());
       foreach ($data as $id => $row) {
         if ($row['columnPHID'] === null) {
           $object_phid = $row['objectPHID'];
           if (empty($allowed_types[phid_get_type($object_phid)])) {
             unset($data[$id]);
           }
         }
       }
     }
 
     $positions = $table->loadAllFromArray($data);
 
     // Find the implied positions which don't exist yet. If there are any,
     // we're going to create them.
     $create = array();
     foreach ($positions as $position) {
       if ($position->getColumnPHID() === null) {
         $column_phid = idx($default_map, $position->getBoardPHID());
         $position->setColumnPHID($column_phid);
 
         $create[] = $position;
       }
     }
 
     if ($create) {
       // If we're adding several objects to a column, insert the column
       // position objects in object ID order. This means that newly added
       // objects float to the top, and when a group of newly added objects
       // float up at the same time, the most recently created ones end up
       // highest in the list.
 
       $objects = id(new PhabricatorObjectQuery())
         ->setViewer(PhabricatorUser::getOmnipotentUser())
         ->withPHIDs(mpull($create, 'getObjectPHID'))
         ->execute();
       $objects = mpull($objects, null, 'getPHID');
       $objects = msort($objects, 'getID');
 
       $create = mgroup($create, 'getObjectPHID');
       $create = array_select_keys($create, array_keys($objects)) + $create;
 
       $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
 
         foreach ($create as $object_phid => $create_positions) {
           foreach ($create_positions as $create_position) {
             $create_position->save();
           }
         }
 
       unset($unguarded);
     }
 
     return $positions;
   }
 
   protected function willFilterPage(array $page) {
 
     if ($this->needColumns) {
       $column_phids = mpull($page, 'getColumnPHID');
       $columns = $this->newColumnQuery()
         ->setParentQuery($this)
         ->setViewer($this->getViewer())
         ->withPHIDs($column_phids)
         ->execute();
       $columns = mpull($columns, null, 'getPHID');
 
       foreach ($page as $key => $position) {
         $column = idx($columns, $position->getColumnPHID());
         if (!$column) {
           unset($page[$key]);
           continue;
         }
 
         $position->attachColumn($column);
       }
     }
 
     return $page;
   }
 
   private function buildWhereClause($conn_r) {
     $where = array();
 
     if ($this->ids !== null) {
       $where[] = qsprintf(
         $conn_r,
         'id IN (%Ld)',
         $this->ids);
     }
 
     if ($this->boardPHIDs !== null) {
       $where[] = qsprintf(
         $conn_r,
         'boardPHID IN (%Ls)',
         $this->boardPHIDs);
     }
 
     if ($this->objectPHIDs !== null) {
       $where[] = qsprintf(
         $conn_r,
         'objectPHID IN (%Ls)',
         $this->objectPHIDs);
     }
 
     if ($this->columns !== null) {
       $where[] = qsprintf(
         $conn_r,
         'columnPHID IN (%Ls)',
         mpull($this->columns, 'getPHID'));
     }
 
     // NOTE: Explicitly not building the paging clause here, since it won't
     // work with the UNION.
 
     return $this->formatWhereClause($where);
   }
 
   public function getQueryApplicationClass() {
     return 'PhabricatorProjectApplication';
   }
 
 }
diff --git a/src/applications/project/storage/PhabricatorProjectColumnPosition.php b/src/applications/project/storage/PhabricatorProjectColumnPosition.php
index 1b229efdfb..0f84cb532f 100644
--- a/src/applications/project/storage/PhabricatorProjectColumnPosition.php
+++ b/src/applications/project/storage/PhabricatorProjectColumnPosition.php
@@ -1,51 +1,62 @@
 <?php
 
 final class PhabricatorProjectColumnPosition extends PhabricatorProjectDAO
   implements PhabricatorPolicyInterface {
 
   protected $boardPHID;
   protected $columnPHID;
   protected $objectPHID;
   protected $sequence;
 
   private $column = self::ATTACHABLE;
 
   public function getConfiguration() {
     return array(
       self::CONFIG_TIMESTAMPS => false,
     ) + parent::getConfiguration();
   }
 
   public function getColumn() {
     return $this->assertAttached($this->column);
   }
 
   public function attachColumn(PhabricatorProjectColumn $column) {
     $this->column = $column;
     return $this;
   }
 
+  public function getOrderingKey() {
+    // Low sequence numbers go above high sequence numbers.
+    // High position IDs go above low position IDs.
+    // Broadly, this makes newly added stuff float to the top.
+
+    return sprintf(
+      '~%012d%012d',
+      $this->getSequence(),
+      ((1 << 31) - $this->getID()));
+  }
+
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */
 
   public function getCapabilities() {
     return array(
       PhabricatorPolicyCapability::CAN_VIEW,
     );
   }
 
   public function getPolicy($capability) {
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
         return PhabricatorPolicies::getMostOpenPolicy();
     }
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
     return false;
   }
 
   public function describeAutomaticCapability($capability) {
     return null;
   }
 
 }