diff --git a/src/applications/maniphest/editor/ManiphestEditEngine.php b/src/applications/maniphest/editor/ManiphestEditEngine.php
--- a/src/applications/maniphest/editor/ManiphestEditEngine.php
+++ b/src/applications/maniphest/editor/ManiphestEditEngine.php
@@ -344,11 +344,18 @@
         ->executeOne();
     }
 
+    $handle_phids = $task->getProjectPHIDs();
+    $handle_phids = array_fuse($handle_phids);
+    $handle_phids = array_diff_key($handle_phids, $board_phids);
+
+    $project_handles = $viewer->loadHandles($handle_phids);
+    $project_handles = iterator_to_array($project_handles);
+
     $tasks = id(new ProjectBoardTaskCard())
       ->setViewer($viewer)
       ->setTask($task)
       ->setOwner($owner)
-      ->setProject($column->getProject())
+      ->setProjectHandles($project_handles)
       ->setCanEdit(true)
       ->getItem();
 
diff --git a/src/applications/project/controller/PhabricatorProjectBoardViewController.php b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
--- a/src/applications/project/controller/PhabricatorProjectBoardViewController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
@@ -228,6 +228,20 @@
 
     $this->handles = ManiphestTaskListView::loadTaskHandles($viewer, $tasks);
 
+    $all_project_phids = array();
+    foreach ($tasks as $task) {
+      foreach ($task->getProjectPHIDs() as $project_phid) {
+        $all_project_phids[$project_phid] = $project_phid;
+      }
+    }
+
+    foreach ($select_phids as $phid) {
+      unset($all_project_phids[$phid]);
+    }
+
+    $all_handles = $viewer->loadHandles($all_project_phids);
+    $all_handles = iterator_to_array($all_handles);
+
     foreach ($columns as $column) {
       if (!$this->showHidden) {
         if ($column->isHidden()) {
@@ -308,9 +322,12 @@
           $owner = $this->handles[$task->getOwnerPHID()];
         }
         $can_edit = idx($task_can_edit_map, $task->getPHID(), false);
+
+        $handles = array_select_keys($all_handles, $task->getProjectPHIDs());
+
         $cards->addItem(id(new ProjectBoardTaskCard())
           ->setViewer($viewer)
-          ->setProject($project)
+          ->setProjectHandles($handles)
           ->setTask($task)
           ->setOwner($owner)
           ->setCanEdit($can_edit)
diff --git a/src/applications/project/controller/PhabricatorProjectMoveController.php b/src/applications/project/controller/PhabricatorProjectMoveController.php
--- a/src/applications/project/controller/PhabricatorProjectMoveController.php
+++ b/src/applications/project/controller/PhabricatorProjectMoveController.php
@@ -195,12 +195,30 @@
         ))
       ->executeOne();
 
+    $except_phids = array($board_phid);
+    if ($project->getHasSubprojects() || $project->getHasMilestones()) {
+      $descendants = id(new PhabricatorProjectQuery())
+        ->setViewer($viewer)
+        ->withAncestorProjectPHIDs($except_phids)
+        ->execute();
+      foreach ($descendants as $descendant) {
+        $except_phids[] = $descendant->getPHID();
+      }
+    }
+
+    $except_phids = array_fuse($except_phids);
+    $handle_phids = array_fuse($object->getProjectPHIDs());
+    $handle_phids = array_diff_key($handle_phids, $except_phids);
+
+    $project_handles = $viewer->loadHandles($handle_phids);
+    $project_handles = iterator_to_array($project_handles);
+
     $card = id(new ProjectBoardTaskCard())
       ->setViewer($viewer)
       ->setTask($object)
       ->setOwner($owner)
       ->setCanEdit(true)
-      ->setProject($project)
+      ->setProjectHandles($project_handles)
       ->getItem();
 
     $card->addClass('phui-workcard');
diff --git a/src/applications/project/view/ProjectBoardTaskCard.php b/src/applications/project/view/ProjectBoardTaskCard.php
--- a/src/applications/project/view/ProjectBoardTaskCard.php
+++ b/src/applications/project/view/ProjectBoardTaskCard.php
@@ -3,7 +3,7 @@
 final class ProjectBoardTaskCard extends Phobject {
 
   private $viewer;
-  private $project;
+  private $projectHandles;
   private $task;
   private $owner;
   private $canEdit;
@@ -16,12 +16,13 @@
     return $this->viewer;
   }
 
-  public function setProject(PhabricatorProject $project) {
-    $this->project = $project;
+  public function setProjectHandles(array $handles) {
+    $this->projectHandles = $handles;
     return $this;
   }
-  public function getProject() {
-    return $this->project;
+
+  public function getProjectHandles() {
+    return $this->projectHandles;
   }
 
   public function setTask(ManiphestTask $task) {
@@ -83,14 +84,11 @@
       $card->addHandleIcon($owner, $owner->getName());
     }
 
-    $project_phids = array_fuse($task->getProjectPHIDs());
-    unset($project_phids[$this->project->getPHID()]);
-
-    if ($project_phids) {
-      $handle_list = $viewer->loadHandles($project_phids);
+    $project_handles = $this->getProjectHandles();
+    if ($project_handles) {
       $tag_list = id(new PHUIHandleTagListView())
         ->setSlim(true)
-        ->setHandles($handle_list);
+        ->setHandles($project_handles);
       $card->addAttribute($tag_list);
     }