diff --git a/src/applications/project/controller/PhabricatorProjectBoardReorderController.php b/src/applications/project/controller/PhabricatorProjectBoardReorderController.php
index 425c27b5f0..011bbd069a 100644
--- a/src/applications/project/controller/PhabricatorProjectBoardReorderController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardReorderController.php
@@ -1,138 +1,149 @@
 <?php
 
 final class PhabricatorProjectBoardReorderController
   extends PhabricatorProjectBoardController {
 
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getViewer();
     $projectid = $request->getURIData('projectID');
 
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
           PhabricatorPolicyCapability::CAN_EDIT,
         ))
       ->withIDs(array($projectid))
       ->executeOne();
     if (!$project) {
       return new Aphront404Response();
     }
 
     $this->setProject($project);
     $project_id = $project->getID();
 
     $board_uri = $this->getApplicationURI("board/{$project_id}/");
     $reorder_uri = $this->getApplicationURI("board/{$project_id}/reorder/");
 
     if ($request->isFormPost()) {
       // User clicked "Done", make sure the page reloads to show the new
       // column order.
       return id(new AphrontRedirectResponse())->setURI($board_uri);
     }
 
     $columns = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array($project->getPHID()))
       ->execute();
     $columns = msort($columns, 'getSequence');
 
     $column_phid = $request->getStr('columnPHID');
     if ($column_phid && $request->validateCSRF()) {
 
       $columns = mpull($columns, null, 'getPHID');
       if (empty($columns[$column_phid])) {
         return new Aphront404Response();
       }
 
       $target_column = $columns[$column_phid];
       $new_sequence = $request->getInt('sequence');
       if ($new_sequence < 0) {
         return new Aphront404Response();
       }
 
       // TODO: For now, we're not recording any transactions here. We probably
       // should, but this sort of edit is extremely trivial.
 
       // Resequence the columns so that the moved column has the correct
       // sequence number. Move columns after it up one place in the sequence.
       $new_map = array();
       foreach ($columns as $phid => $column) {
         $value = $column->getSequence();
         if ($column->getPHID() == $column_phid) {
           $value = $new_sequence;
         } else if ($column->getSequence() >= $new_sequence) {
           $value = $value + 1;
         }
         $new_map[$phid] = $value;
       }
 
       // Sort the columns into their new ordering.
       asort($new_map);
 
       // Now, compact the ordering and adjust any columns that need changes.
       $project->openTransaction();
         $sequence = 0;
         foreach ($new_map as $phid => $ignored) {
           $new_value = $sequence++;
           $cur_value = $columns[$phid]->getSequence();
           if ($new_value != $cur_value) {
             $columns[$phid]->setSequence($new_value)->save();
           }
         }
       $project->saveTransaction();
 
       return id(new AphrontAjaxResponse())->setContent(
         array(
           'sequenceMap' => mpull($columns, 'getSequence', 'getPHID'),
         ));
     }
 
     $list_id = celerity_generate_unique_node_id();
 
     $list = id(new PHUIObjectItemListView())
       ->setUser($viewer)
       ->setID($list_id)
       ->setFlush(true);
 
     foreach ($columns as $column) {
+      // Don't allow milestone columns to be reordered.
+      $proxy = $column->getProxy();
+      if ($proxy && $proxy->isMilestone()) {
+        continue;
+      }
+
+      // At least for now, don't show subproject column.
+      if ($proxy) {
+        continue;
+      }
+
       $item = id(new PHUIObjectItemView())
         ->setHeader($column->getDisplayName())
-        ->addIcon('none', $column->getDisplayType());
+        ->addIcon($column->getHeaderIcon(), $column->getDisplayType());
 
       if ($column->isHidden()) {
         $item->setDisabled(true);
       }
 
       $item->setGrippable(true);
       $item->addSigil('board-column');
       $item->setMetadata(
         array(
           'columnPHID' => $column->getPHID(),
           'columnSequence' => $column->getSequence(),
         ));
 
       $list->addItem($item);
     }
 
     Javelin::initBehavior(
       'reorder-columns',
       array(
         'listID' => $list_id,
         'reorderURI' => $reorder_uri,
       ));
 
     $note = id(new PHUIInfoView())
       ->appendChild(pht('Drag and drop columns to reorder them.'))
       ->setSeverity(PHUIInfoView::SEVERITY_NOTICE);
 
     return $this->newDialog()
       ->setTitle(pht('Reorder Columns'))
       ->setWidth(AphrontDialogView::WIDTH_FORM)
       ->appendChild($note)
       ->appendChild($list)
       ->addSubmitButton(pht('Done'));
   }
 
 }
diff --git a/src/applications/project/controller/PhabricatorProjectColumnDetailController.php b/src/applications/project/controller/PhabricatorProjectColumnDetailController.php
index ca25c089fb..e008c832d9 100644
--- a/src/applications/project/controller/PhabricatorProjectColumnDetailController.php
+++ b/src/applications/project/controller/PhabricatorProjectColumnDetailController.php
@@ -1,123 +1,130 @@
 <?php
 
 final class PhabricatorProjectColumnDetailController
   extends PhabricatorProjectBoardController {
 
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getViewer();
     $id = $request->getURIData('id');
     $project_id = $request->getURIData('projectID');
 
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
         ))
       ->withIDs(array($project_id))
       ->needImages(true)
       ->executeOne();
     if (!$project) {
       return new Aphront404Response();
     }
     $this->setProject($project);
 
+    $project_id = $project->getID();
+
     $column = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withIDs(array($id))
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
         ))
         ->executeOne();
     if (!$column) {
       return new Aphront404Response();
     }
 
     $timeline = $this->buildTransactionTimeline(
       $column,
       new PhabricatorProjectColumnTransactionQuery());
     $timeline->setShouldTerminate(true);
 
     $title = $column->getDisplayName();
 
     $header = $this->buildHeaderView($column);
     $actions = $this->buildActionView($column);
     $properties = $this->buildPropertyView($column, $actions);
 
+    $crumbs = $this->buildApplicationCrumbs();
+    $crumbs->addTextCrumb(pht('Workboard'), "/project/board/{$project_id}/");
+    $crumbs->addTextCrumb(pht('Column: %s', $title));
+
     $box = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->addPropertyList($properties);
 
     $nav = $this->getProfileMenu();
 
     return $this->newPage()
       ->setTitle($title)
       ->setNavigation($nav)
+      ->setCrumbs($crumbs)
       ->appendChild(
         array(
           $box,
           $timeline,
         ));
   }
 
   private function buildHeaderView(PhabricatorProjectColumn $column) {
     $viewer = $this->getRequest()->getUser();
 
     $header = id(new PHUIHeaderView())
       ->setUser($viewer)
       ->setHeader($column->getDisplayName())
       ->setPolicyObject($column);
 
     if ($column->isHidden()) {
       $header->setStatus('fa-ban', 'dark', pht('Hidden'));
     }
 
     return $header;
   }
 
   private function buildActionView(PhabricatorProjectColumn $column) {
     $viewer = $this->getRequest()->getUser();
 
     $id = $column->getID();
     $project_id = $this->getProject()->getID();
     $base_uri = '/board/'.$project_id.'/';
 
     $actions = id(new PhabricatorActionListView())
       ->setUser($viewer);
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $column,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $actions->addAction(
       id(new PhabricatorActionView())
         ->setName(pht('Edit Column'))
         ->setIcon('fa-pencil')
         ->setHref($this->getApplicationURI($base_uri.'edit/'.$id.'/'))
         ->setDisabled(!$can_edit)
         ->setWorkflow(!$can_edit));
 
     return $actions;
   }
 
   private function buildPropertyView(
     PhabricatorProjectColumn $column,
     PhabricatorActionListView $actions) {
     $viewer = $this->getRequest()->getUser();
 
     $properties = id(new PHUIPropertyListView())
       ->setUser($viewer)
       ->setObject($column)
       ->setActionList($actions);
 
     $limit = $column->getPointLimit();
     $properties->addProperty(
       pht('Point Limit'),
       $limit ? $limit : pht('No Limit'));
 
     return $properties;
   }
 
 }
diff --git a/src/applications/project/controller/PhabricatorProjectColumnEditController.php b/src/applications/project/controller/PhabricatorProjectColumnEditController.php
index 77f90b56cb..5ebc721c69 100644
--- a/src/applications/project/controller/PhabricatorProjectColumnEditController.php
+++ b/src/applications/project/controller/PhabricatorProjectColumnEditController.php
@@ -1,154 +1,156 @@
 <?php
 
 final class PhabricatorProjectColumnEditController
   extends PhabricatorProjectBoardController {
 
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getViewer();
     $id = $request->getURIData('id');
     $project_id = $request->getURIData('projectID');
 
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
           PhabricatorPolicyCapability::CAN_EDIT,
         ))
       ->withIDs(array($project_id))
       ->needImages(true)
       ->executeOne();
 
     if (!$project) {
       return new Aphront404Response();
     }
     $this->setProject($project);
 
     $is_new = ($id ? false : true);
 
     if (!$is_new) {
       $column = id(new PhabricatorProjectColumnQuery())
         ->setViewer($viewer)
         ->withIDs(array($id))
         ->requireCapabilities(
           array(
             PhabricatorPolicyCapability::CAN_VIEW,
             PhabricatorPolicyCapability::CAN_EDIT,
           ))
         ->executeOne();
       if (!$column) {
         return new Aphront404Response();
       }
     } else {
       $column = PhabricatorProjectColumn::initializeNewColumn($viewer);
     }
 
     $e_name = null;
     $e_limit = null;
 
     $v_limit = $column->getPointLimit();
     $v_name = $column->getName();
 
     $validation_exception = null;
     $base_uri = '/board/'.$project_id.'/';
     if ($is_new) {
       // we want to go back to the board
       $view_uri = $this->getApplicationURI($base_uri);
     } else {
       $view_uri = $this->getApplicationURI($base_uri.'column/'.$id.'/');
     }
 
     if ($request->isFormPost()) {
       $v_name = $request->getStr('name');
       $v_limit = $request->getStr('limit');
 
       if ($is_new) {
         $column->setProjectPHID($project->getPHID());
         $column->attachProject($project);
 
         $columns = id(new PhabricatorProjectColumnQuery())
           ->setViewer($viewer)
           ->withProjectPHIDs(array($project->getPHID()))
           ->execute();
 
         $new_sequence = 1;
         if ($columns) {
           $values = mpull($columns, 'getSequence');
           $new_sequence = max($values) + 1;
         }
         $column->setSequence($new_sequence);
       }
 
       $xactions = array();
 
-      $type_name = PhabricatorProjectColumnTransaction::TYPE_NAME;
-      $xactions[] = id(new PhabricatorProjectColumnTransaction())
-        ->setTransactionType($type_name)
-        ->setNewValue($v_name);
+      if (!$column->getProxy()) {
+        $type_name = PhabricatorProjectColumnTransaction::TYPE_NAME;
+        $xactions[] = id(new PhabricatorProjectColumnTransaction())
+          ->setTransactionType($type_name)
+          ->setNewValue($v_name);
+      }
 
       $type_limit = PhabricatorProjectColumnTransaction::TYPE_LIMIT;
       $xactions[] = id(new PhabricatorProjectColumnTransaction())
         ->setTransactionType($type_limit)
         ->setNewValue($v_limit);
 
       try {
         $editor = id(new PhabricatorProjectColumnTransactionEditor())
           ->setActor($viewer)
           ->setContinueOnNoEffect(true)
           ->setContentSourceFromRequest($request)
           ->applyTransactions($column, $xactions);
         return id(new AphrontRedirectResponse())->setURI($view_uri);
       } catch (PhabricatorApplicationTransactionValidationException $ex) {
         $e_name = $ex->getShortMessage($type_name);
         $e_limit = $ex->getShortMessage($type_limit);
         $validation_exception = $ex;
       }
     }
 
-    $form = new AphrontFormView();
-    $form
-      ->setUser($request->getUser())
-      ->appendChild(
+    $form = id(new AphrontFormView())
+      ->setUser($request->getUser());
+
+    if (!$column->getProxy()) {
+      $form->appendChild(
         id(new AphrontFormTextControl())
           ->setValue($v_name)
           ->setLabel(pht('Name'))
           ->setName('name')
-          ->setError($e_name)
-          ->setCaption(
-            pht('This will be displayed as the header of the column.')))
-      ->appendChild(
-        id(new AphrontFormTextControl())
-          ->setValue($v_limit)
-          ->setLabel(pht('Point Limit'))
-          ->setName('limit')
-          ->setError($e_limit)
-          ->setCaption(
-            pht('Maximum number of points of tasks allowed in the column.')));
+          ->setError($e_name));
+    }
 
+    $form->appendChild(
+      id(new AphrontFormTextControl())
+        ->setValue($v_limit)
+        ->setLabel(pht('Point Limit'))
+        ->setName('limit')
+        ->setError($e_limit)
+        ->setCaption(
+          pht('Maximum number of points of tasks allowed in the column.')));
 
     if ($is_new) {
       $title = pht('Create Column');
       $submit = pht('Create Column');
     } else {
       $title = pht('Edit %s', $column->getDisplayName());
       $submit = pht('Save Column');
     }
 
     $form->appendChild(
       id(new AphrontFormSubmitControl())
         ->setValue($submit)
         ->addCancelButton($view_uri));
 
     $form_box = id(new PHUIObjectBoxView())
       ->setHeaderText($title)
       ->setValidationException($validation_exception)
       ->setForm($form);
 
     $nav = $this->getProfileMenu();
 
     return $this->newPage()
       ->setTitle($title)
       ->setNavigation($nav)
       ->appendChild($form_box);
   }
 }
diff --git a/src/applications/project/engine/PhabricatorBoardLayoutEngine.php b/src/applications/project/engine/PhabricatorBoardLayoutEngine.php
index 31be95816b..4415e2fdf9 100644
--- a/src/applications/project/engine/PhabricatorBoardLayoutEngine.php
+++ b/src/applications/project/engine/PhabricatorBoardLayoutEngine.php
@@ -1,580 +1,582 @@
 <?php
 
 final class PhabricatorBoardLayoutEngine extends Phobject {
 
   private $viewer;
   private $boardPHIDs;
   private $objectPHIDs;
   private $boards;
   private $columnMap = array();
   private $objectColumnMap = array();
   private $boardLayout = array();
 
   private $remQueue = array();
   private $addQueue = array();
 
   public function setViewer(PhabricatorUser $viewer) {
     $this->viewer = $viewer;
     return $this;
   }
 
   public function getViewer() {
     return $this->viewer;
   }
 
   public function setBoardPHIDs(array $board_phids) {
     $this->boardPHIDs = array_fuse($board_phids);
     return $this;
   }
 
   public function getBoardPHIDs() {
     return $this->boardPHIDs;
   }
 
   public function setObjectPHIDs(array $object_phids) {
     $this->objectPHIDs = array_fuse($object_phids);
     return $this;
   }
 
   public function getObjectPHIDs() {
     return $this->objectPHIDs;
   }
 
   public function executeLayout() {
     $viewer = $this->getViewer();
 
     $boards = $this->loadBoards();
     if (!$boards) {
       return $this;
     }
 
     $columns = $this->loadColumns($boards);
     $positions = $this->loadPositions($boards);
 
     foreach ($boards as $board_phid => $board) {
       $board_columns = idx($columns, $board_phid);
 
       // Don't layout boards with no columns. These boards need to be formally
       // created first.
       if (!$columns) {
         continue;
       }
 
       $board_positions = idx($positions, $board_phid, array());
 
       $this->layoutBoard($board, $board_columns, $board_positions);
     }
 
     return $this;
   }
 
   public function getColumns($board_phid) {
     $columns = idx($this->boardLayout, $board_phid, array());
     return array_select_keys($this->columnMap, array_keys($columns));
   }
 
   public function getColumnObjectPHIDs($board_phid, $column_phid) {
     $columns = idx($this->boardLayout, $board_phid, array());
     $positions = idx($columns, $column_phid, array());
     return mpull($positions, 'getObjectPHID');
   }
 
   public function getObjectColumns($board_phid, $object_phid) {
     $board_map = idx($this->objectColumnMap, $board_phid, array());
 
     $column_phids = idx($board_map, $object_phid);
     if (!$column_phids) {
       return array();
     }
 
     return array_select_keys($this->columnMap, $column_phids);
   }
 
   public function queueRemovePosition(
     $board_phid,
     $column_phid,
     $object_phid) {
 
     $board_layout = idx($this->boardLayout, $board_phid, array());
     $positions = idx($board_layout, $column_phid, array());
     $position = idx($positions, $object_phid);
 
     if ($position) {
       $this->remQueue[] = $position;
 
       // If this position hasn't been saved yet, get it out of the add queue.
       if (!$position->getID()) {
         foreach ($this->addQueue as $key => $add_position) {
           if ($add_position === $position) {
             unset($this->addQueue[$key]);
           }
         }
       }
     }
 
     unset($this->boardLayout[$board_phid][$column_phid][$object_phid]);
 
     return $this;
   }
 
   public function queueAddPositionBefore(
     $board_phid,
     $column_phid,
     $object_phid,
     $before_phid) {
 
     return $this->queueAddPositionRelative(
       $board_phid,
       $column_phid,
       $object_phid,
       $before_phid,
       true);
   }
 
   public function queueAddPositionAfter(
     $board_phid,
     $column_phid,
     $object_phid,
     $after_phid) {
 
     return $this->queueAddPositionRelative(
       $board_phid,
       $column_phid,
       $object_phid,
       $after_phid,
       false);
   }
 
   public function queueAddPosition(
     $board_phid,
     $column_phid,
     $object_phid) {
     return $this->queueAddPositionRelative(
       $board_phid,
       $column_phid,
       $object_phid,
       null,
       true);
   }
 
   private function queueAddPositionRelative(
     $board_phid,
     $column_phid,
     $object_phid,
     $relative_phid,
     $is_before) {
 
     $board_layout = idx($this->boardLayout, $board_phid, array());
     $positions = idx($board_layout, $column_phid, array());
 
     // Check if the object is already in the column, and remove it if it is.
     $object_position = idx($positions, $object_phid);
     unset($positions[$object_phid]);
 
     if (!$object_position) {
       $object_position = id(new PhabricatorProjectColumnPosition())
         ->setBoardPHID($board_phid)
         ->setColumnPHID($column_phid)
         ->setObjectPHID($object_phid);
     }
 
     $found = false;
     if (!$positions) {
       $object_position->setSequence(0);
     } else {
       foreach ($positions as $position) {
         if (!$found) {
           if ($relative_phid === null) {
             $is_match = true;
           } else {
             $position_phid = $position->getObjectPHID();
             $is_match = ($relative_phid == $position_phid);
           }
 
           if ($is_match) {
             $found = true;
 
             $sequence = $position->getSequence();
 
             if (!$is_before) {
               $sequence++;
             }
 
             $object_position->setSequence($sequence++);
 
             if (!$is_before) {
               // If we're inserting after this position, continue the loop so
               // we don't update it.
               continue;
             }
           }
         }
 
         if ($found) {
           $position->setSequence($sequence++);
           $this->addQueue[] = $position;
         }
       }
     }
 
     if ($relative_phid && !$found) {
       throw new Exception(
         pht(
           'Unable to find object "%s" in column "%s" on board "%s".',
           $relative_phid,
           $column_phid,
           $board_phid));
     }
 
     $this->addQueue[] = $object_position;
 
     $positions[$object_phid] = $object_position;
     $positions = msort($positions, 'getOrderingKey');
 
     $this->boardLayout[$board_phid][$column_phid] = $positions;
 
     return $this;
   }
 
   public function applyPositionUpdates() {
     foreach ($this->remQueue as $position) {
       if ($position->getID()) {
         $position->delete();
       }
     }
     $this->remQueue = array();
 
     $adds = array();
     $updates = array();
 
     foreach ($this->addQueue as $position) {
       $id = $position->getID();
       if ($id) {
         $updates[$id] = $position;
       } else {
         $adds[] = $position;
       }
     }
     $this->addQueue = array();
 
     $table = new PhabricatorProjectColumnPosition();
     $conn_w = $table->establishConnection('w');
 
     $pairs = array();
     foreach ($updates as $id => $position) {
       // 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,
         $position->getSequence());
     }
 
     if ($pairs) {
       queryfx(
         $conn_w,
         'INSERT INTO %T (id, sequence, boardPHID, columnPHID, objectPHID)
           VALUES %Q ON DUPLICATE KEY UPDATE sequence = VALUES(sequence)',
         $table->getTableName(),
         implode(', ', $pairs));
     }
 
     foreach ($adds as $position) {
       $position->save();
     }
 
     return $this;
   }
 
   private function loadBoards() {
     $viewer = $this->getViewer();
     $board_phids = $this->getBoardPHIDs();
 
     $boards = id(new PhabricatorObjectQuery())
       ->setViewer($viewer)
       ->withPHIDs($board_phids)
       ->execute();
     $boards = mpull($boards, null, 'getPHID');
 
     foreach ($boards as $key => $board) {
       if (!$board->getHasWorkboard()) {
         unset($boards[$key]);
       }
     }
 
     return $boards;
   }
 
   private function loadColumns(array $boards) {
     $viewer = $this->getViewer();
 
     $columns = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array_keys($boards))
       ->execute();
-    $columns = msort($columns, 'getSequence');
+    $columns = msort($columns, 'getOrderingKey');
     $columns = mpull($columns, null, 'getPHID');
 
     $need_children = array();
     foreach ($boards as $phid => $board) {
       if ($board->getHasMilestones() || $board->getHasSubprojects()) {
         $need_children[] = $phid;
       }
     }
 
     if ($need_children) {
       $children = id(new PhabricatorProjectQuery())
         ->setViewer($viewer)
         ->withParentProjectPHIDs($need_children)
         ->execute();
       $children = mpull($children, null, 'getPHID');
       $children = mgroup($children, 'getParentProjectPHID');
     } else {
       $children = array();
     }
 
     $columns = mgroup($columns, 'getProjectPHID');
     foreach ($boards as $board_phid => $board) {
       $board_columns = idx($columns, $board_phid, array());
 
       // If the project has milestones, create any missing columns.
       if ($board->getHasMilestones() || $board->getHasSubprojects()) {
         $child_projects = idx($children, $board_phid, array());
 
         $next_sequence = last($board_columns)->getSequence() + 1;
         $proxy_columns = mpull($board_columns, null, 'getProxyPHID');
         foreach ($child_projects as $child_phid => $child) {
           if (isset($proxy_columns[$child_phid])) {
             continue;
           }
 
           $new_column = PhabricatorProjectColumn::initializeNewColumn($viewer)
             ->attachProject($board)
             ->attachProxy($child)
             ->setSequence($next_sequence++)
             ->setProjectPHID($board_phid)
             ->setProxyPHID($child_phid);
 
           $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
             $new_column->save();
           unset($unguarded);
 
           $board_columns[$new_column->getPHID()] = $new_column;
         }
       }
 
+      $board_columns = msort($board_columns, 'getOrderingKey');
+
       $columns[$board_phid] = $board_columns;
     }
 
     foreach ($columns as $board_phid => $board_columns) {
       foreach ($board_columns as $board_column) {
         $column_phid = $board_column->getPHID();
         $this->columnMap[$column_phid] = $board_column;
       }
     }
 
     return $columns;
   }
 
   private function loadPositions(array $boards) {
     $viewer = $this->getViewer();
 
     $object_phids = $this->getObjectPHIDs();
     if (!$object_phids) {
       return array();
     }
 
     $positions = id(new PhabricatorProjectColumnPositionQuery())
       ->setViewer($viewer)
       ->withBoardPHIDs(array_keys($boards))
       ->withObjectPHIDs($object_phids)
       ->execute();
     $positions = msort($positions, 'getOrderingKey');
     $positions = mgroup($positions, 'getBoardPHID');
 
     return $positions;
   }
 
   private function layoutBoard(
     $board,
     array $columns,
     array $positions) {
 
     $viewer = $this->getViewer();
 
     $board_phid = $board->getPHID();
     $position_groups = mgroup($positions, 'getObjectPHID');
 
     $layout = array();
     foreach ($columns as $column) {
       $column_phid = $column->getPHID();
       $layout[$column_phid] = array();
 
       if ($column->isDefaultColumn()) {
         $default_phid = $column_phid;
       }
     }
 
     // Find all the columns which are proxies for other objects.
     $proxy_map = array();
     foreach ($columns as $column) {
       $proxy_phid = $column->getProxyPHID();
       if ($proxy_phid) {
         $proxy_map[$proxy_phid] = $column->getPHID();
       }
     }
 
     $object_phids = $this->getObjectPHIDs();
 
     // If we have proxies, we need to force cards into the correct proxy
     // columns.
     if ($proxy_map) {
       $edge_query = id(new PhabricatorEdgeQuery())
         ->withSourcePHIDs($object_phids)
         ->withEdgeTypes(
           array(
             PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
           ));
       $edge_query->execute();
 
       $project_phids = $edge_query->getDestinationPHIDs();
       $project_phids = array_fuse($project_phids);
     } else {
       $project_phids = array();
     }
 
     if ($project_phids) {
       $projects = id(new PhabricatorProjectQuery())
         ->setViewer($viewer)
         ->withPHIDs($project_phids)
         ->execute();
       $projects = mpull($projects, null, 'getPHID');
     } else {
       $projects = array();
     }
 
     // Build a map from every project that any task is tagged with to the
     // ancestor project which has a column on this board, if one exists.
     $ancestor_map = array();
     foreach ($projects as $phid => $project) {
       if (isset($proxy_map[$phid])) {
         $ancestor_map[$phid] = $proxy_map[$phid];
       } else {
         $seen = array($phid);
         foreach ($project->getAncestorProjects() as $ancestor) {
           $ancestor_phid = $ancestor->getPHID();
           $seen[] = $ancestor_phid;
           if (isset($proxy_map[$ancestor_phid])) {
             foreach ($seen as $project_phid) {
               $ancestor_map[$project_phid] = $proxy_map[$ancestor_phid];
             }
           }
         }
       }
     }
 
     foreach ($object_phids as $object_phid) {
       $positions = idx($position_groups, $object_phid, array());
 
       // First, check for objects that have corresponding proxy columns. We're
       // going to overwrite normal column positions if a tag belongs to a proxy
       // column, since you can't be in normal columns if you're in proxy
       // columns.
       $proxy_hits = array();
       if ($proxy_map) {
         $object_project_phids = $edge_query->getDestinationPHIDs(
           array(
             $object_phid,
           ));
 
         foreach ($object_project_phids as $project_phid) {
           if (isset($ancestor_map[$project_phid])) {
             $proxy_hits[] = $ancestor_map[$project_phid];
           }
         }
       }
 
       if ($proxy_hits) {
         // TODO: For now, only one column hit is permissible.
         $proxy_hits = array_slice($proxy_hits, 0, 1);
 
         $proxy_hits = array_fuse($proxy_hits);
 
         // Check the object positions: we hope to find a position in each
         // column the object should be part of. We're going to drop any
         // invalid positions and create new positions where positions are
         // missing.
         foreach ($positions as $key => $position) {
           $column_phid = $position->getColumnPHID();
           if (isset($proxy_hits[$column_phid])) {
             // Valid column, mark the position as found.
             unset($proxy_hits[$column_phid]);
           } else {
             // Invalid column, ignore the position.
             unset($positions[$key]);
           }
         }
 
         // Create new positions for anything we haven't found.
         foreach ($proxy_hits as $proxy_hit) {
           $new_position = id(new PhabricatorProjectColumnPosition())
             ->setBoardPHID($board_phid)
             ->setColumnPHID($proxy_hit)
             ->setObjectPHID($object_phid)
             ->setSequence(0);
 
           $this->addQueue[] = $new_position;
 
           $positions[] = $new_position;
         }
       } else {
         // Ignore any positions in columns which no longer exist. We don't
         // actively destory them because the rest of the code ignores them and
         // there's no real need to destroy the data.
         foreach ($positions as $key => $position) {
           $column_phid = $position->getColumnPHID();
           if (empty($columns[$column_phid])) {
             unset($positions[$key]);
           }
         }
 
         // If the object has no position, put it on the default column.
         if (!$positions) {
           $new_position = id(new PhabricatorProjectColumnPosition())
             ->setBoardPHID($board_phid)
             ->setColumnPHID($default_phid)
             ->setObjectPHID($object_phid)
             ->setSequence(0);
 
           $this->addQueue[] = $new_position;
 
           $positions = array(
             $new_position,
           );
         }
       }
 
       foreach ($positions as $position) {
         $column_phid = $position->getColumnPHID();
         $layout[$column_phid][$object_phid] = $position;
       }
     }
 
     foreach ($layout as $column_phid => $map) {
       $map = msort($map, 'getOrderingKey');
       $layout[$column_phid] = $map;
 
       foreach ($map as $object_phid => $position) {
         $this->objectColumnMap[$board_phid][$object_phid][] = $column_phid;
       }
     }
 
     $this->boardLayout[$board_phid] = $layout;
   }
 
 }
diff --git a/src/applications/project/storage/PhabricatorProjectColumn.php b/src/applications/project/storage/PhabricatorProjectColumn.php
index a63312438c..0ab6ec89c0 100644
--- a/src/applications/project/storage/PhabricatorProjectColumn.php
+++ b/src/applications/project/storage/PhabricatorProjectColumn.php
@@ -1,219 +1,239 @@
 <?php
 
 final class PhabricatorProjectColumn
   extends PhabricatorProjectDAO
   implements
     PhabricatorApplicationTransactionInterface,
     PhabricatorPolicyInterface,
     PhabricatorDestructibleInterface {
 
   const STATUS_ACTIVE = 0;
   const STATUS_HIDDEN = 1;
 
   const DEFAULT_ORDER = 'natural';
   const ORDER_NATURAL = 'natural';
   const ORDER_PRIORITY = 'priority';
 
   protected $name;
   protected $status;
   protected $projectPHID;
   protected $proxyPHID;
   protected $sequence;
   protected $properties = array();
 
   private $project = self::ATTACHABLE;
   private $proxy = self::ATTACHABLE;
 
   public static function initializeNewColumn(PhabricatorUser $user) {
     return id(new PhabricatorProjectColumn())
       ->setName('')
-      ->setStatus(self::STATUS_ACTIVE);
+      ->setStatus(self::STATUS_ACTIVE)
+      ->attachProxy(null);
   }
 
   protected function getConfiguration() {
     return array(
       self::CONFIG_AUX_PHID => true,
       self::CONFIG_SERIALIZATION => array(
         'properties' => self::SERIALIZATION_JSON,
       ),
       self::CONFIG_COLUMN_SCHEMA => array(
         'name' => 'text255',
         'status' => 'uint32',
         'sequence' => 'uint32',
         'proxyPHID' => 'phid?',
       ),
       self::CONFIG_KEY_SCHEMA => array(
         'key_status' => array(
           'columns' => array('projectPHID', 'status', 'sequence'),
         ),
         'key_sequence' => array(
           'columns' => array('projectPHID', 'sequence'),
         ),
         'key_proxy' => array(
           'columns' => array('projectPHID', 'proxyPHID'),
           'unique' => true,
         ),
       ),
     ) + parent::getConfiguration();
   }
 
   public function generatePHID() {
     return PhabricatorPHID::generateNewPHID(
       PhabricatorProjectColumnPHIDType::TYPECONST);
   }
 
   public function attachProject(PhabricatorProject $project) {
     $this->project = $project;
     return $this;
   }
 
   public function getProject() {
     return $this->assertAttached($this->project);
   }
 
   public function attachProxy($proxy) {
     $this->proxy = $proxy;
     return $this;
   }
 
   public function getProxy() {
     return $this->assertAttached($this->proxy);
   }
 
   public function isDefaultColumn() {
     return (bool)$this->getProperty('isDefault');
   }
 
   public function isHidden() {
     return ($this->getStatus() == self::STATUS_HIDDEN);
   }
 
   public function getDisplayName() {
     $proxy = $this->getProxy();
     if ($proxy) {
       return $proxy->getProxyColumnName();
     }
 
     $name = $this->getName();
     if (strlen($name)) {
       return $name;
     }
 
     if ($this->isDefaultColumn()) {
       return pht('Backlog');
     }
 
     return pht('Unnamed Column');
   }
 
   public function getDisplayType() {
     if ($this->isDefaultColumn()) {
       return pht('(Default)');
     }
     if ($this->isHidden()) {
       return pht('(Hidden)');
     }
 
     return null;
   }
 
   public function getDisplayClass() {
     $proxy = $this->getProxy();
     if ($proxy) {
       return $proxy->getProxyColumnClass();
     }
 
     return null;
   }
 
   public function getHeaderIcon() {
     $proxy = $this->getProxy();
     if ($proxy) {
       return $proxy->getProxyColumnIcon();
     }
 
     if ($this->isHidden()) {
       return 'fa-eye-slash';
     }
 
     return null;
   }
 
   public function getProperty($key, $default = null) {
     return idx($this->properties, $key, $default);
   }
 
   public function setProperty($key, $value) {
     $this->properties[$key] = $value;
     return $this;
   }
 
   public function getPointLimit() {
     return $this->getProperty('pointLimit');
   }
 
   public function setPointLimit($limit) {
     $this->setProperty('pointLimit', $limit);
     return $this;
   }
 
+  public function getOrderingKey() {
+    $proxy = $this->getProxy();
+
+    // Normal columns and subproject columns go first, in a user-controlled
+    // order.
+
+    // All the milestone columns go last, in their sequential order.
+
+    if (!$proxy || !$proxy->isMilestone()) {
+      $group = 'A';
+      $sequence = $this->getSequence();
+    } else {
+      $group = 'B';
+      $sequence = $proxy->getMilestoneNumber();
+    }
+
+    return sprintf('%s%012d', $group, $sequence);
+  }
+
 
 /* -(  PhabricatorApplicationTransactionInterface  )------------------------- */
 
 
   public function getApplicationTransactionEditor() {
     return new PhabricatorProjectColumnTransactionEditor();
   }
 
   public function getApplicationTransactionObject() {
     return $this;
   }
 
   public function getApplicationTransactionTemplate() {
     return new PhabricatorProjectColumnTransaction();
   }
 
   public function willRenderTimeline(
     PhabricatorApplicationTransactionView $timeline,
     AphrontRequest $request) {
 
     return $timeline;
   }
 
 
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */
 
 
   public function getCapabilities() {
     return array(
       PhabricatorPolicyCapability::CAN_VIEW,
       PhabricatorPolicyCapability::CAN_EDIT,
     );
   }
 
   public function getPolicy($capability) {
     return $this->getProject()->getPolicy($capability);
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
     return $this->getProject()->hasAutomaticCapability(
       $capability,
       $viewer);
   }
 
   public function describeAutomaticCapability($capability) {
     return pht('Users must be able to see a project to see its board.');
   }
 
 
 /* -(  PhabricatorDestructibleInterface  )----------------------------------- */
 
   public function destroyObjectPermanently(
     PhabricatorDestructionEngine $engine) {
 
     $this->openTransaction();
     $this->delete();
     $this->saveTransaction();
   }
 
 }