diff --git a/src/applications/herald/adapter/HeraldManiphestTaskAdapter.php b/src/applications/herald/adapter/HeraldManiphestTaskAdapter.php
--- a/src/applications/herald/adapter/HeraldManiphestTaskAdapter.php
+++ b/src/applications/herald/adapter/HeraldManiphestTaskAdapter.php
@@ -3,7 +3,6 @@
 final class HeraldManiphestTaskAdapter extends HeraldAdapter {
 
   private $task;
-  private $ccPHIDs = array();
   private $assignPHID;
 
   protected function newObject() {
@@ -48,14 +47,6 @@
     return $this->task;
   }
 
-  private function setCcPHIDs(array $cc_phids) {
-    $this->ccPHIDs = $cc_phids;
-    return $this;
-  }
-  public function getCcPHIDs() {
-    return $this->ccPHIDs;
-  }
-
   public function setAssignPHID($assign_phid) {
     $this->assignPHID = $assign_phid;
     return $this;
@@ -92,6 +83,7 @@
         return array_merge(
           array(
             self::ACTION_ADD_CC,
+            self::ACTION_REMOVE_CC,
             self::ACTION_EMAIL,
             self::ACTION_ASSIGN_TASK,
             self::ACTION_NOTHING,
@@ -101,6 +93,7 @@
         return array_merge(
           array(
             self::ACTION_ADD_CC,
+            self::ACTION_REMOVE_CC,
             self::ACTION_EMAIL,
             self::ACTION_FLAG,
             self::ACTION_ASSIGN_TASK,
@@ -148,15 +141,6 @@
     foreach ($effects as $effect) {
       $action = $effect->getAction();
       switch ($action) {
-        case self::ACTION_ADD_CC:
-          foreach ($effect->getTarget() as $phid) {
-            $this->ccPHIDs[] = $phid;
-          }
-          $result[] = new HeraldApplyTranscript(
-            $effect,
-            true,
-            pht('Added addresses to cc list.'));
-          break;
         case self::ACTION_ASSIGN_TASK:
           $target_array = $effect->getTarget();
           $assign_phid = reset($target_array);
diff --git a/src/applications/maniphest/editor/ManiphestTransactionEditor.php b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
--- a/src/applications/maniphest/editor/ManiphestTransactionEditor.php
+++ b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
@@ -513,13 +513,6 @@
 
     $xactions = array();
 
-    $cc_phids = $adapter->getCcPHIDs();
-    if ($cc_phids) {
-      $xactions[] = id(new ManiphestTransaction())
-        ->setTransactionType(PhabricatorTransactions::TYPE_SUBSCRIBERS)
-        ->setNewValue(array('+' => $cc_phids));
-    }
-
     $assign_phid = $adapter->getAssignPHID();
     if ($assign_phid) {
       $xactions[] = id(new ManiphestTransaction())