diff --git a/src/applications/ponder/editor/PonderAnswerEditor.php b/src/applications/ponder/editor/PonderAnswerEditor.php
index 521c1948ed..10a90a1945 100644
--- a/src/applications/ponder/editor/PonderAnswerEditor.php
+++ b/src/applications/ponder/editor/PonderAnswerEditor.php
@@ -1,144 +1,145 @@
 <?php
 
 final class PonderAnswerEditor extends PonderEditor {
 
   public function getEditorObjectsDescription() {
     return pht('Ponder Answers');
   }
 
   public function getTransactionTypes() {
     $types = parent::getTransactionTypes();
 
     $types[] = PhabricatorTransactions::TYPE_COMMENT;
+    $types[] = PhabricatorTransactions::TYPE_EDGE;
 
     $types[] = PonderAnswerTransaction::TYPE_CONTENT;
     $types[] = PonderAnswerTransaction::TYPE_STATUS;
     $types[] = PonderAnswerTransaction::TYPE_QUESTION_ID;
 
     return $types;
   }
 
   protected function getCustomTransactionOldValue(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case PonderAnswerTransaction::TYPE_CONTENT:
       case PonderAnswerTransaction::TYPE_STATUS:
         return $object->getContent();
       case PonderAnswerTransaction::TYPE_QUESTION_ID:
         return $object->getQuestionID();
     }
   }
 
   protected function getCustomTransactionNewValue(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case PonderAnswerTransaction::TYPE_CONTENT:
       case PonderAnswerTransaction::TYPE_STATUS:
       case PonderAnswerTransaction::TYPE_QUESTION_ID:
         return $xaction->getNewValue();
     }
   }
 
   protected function applyCustomInternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case PonderAnswerTransaction::TYPE_CONTENT:
         $object->setContent($xaction->getNewValue());
         break;
       case PonderAnswerTransaction::TYPE_STATUS:
         $object->setStatus($xaction->getNewValue());
         break;
       case PonderAnswerTransaction::TYPE_QUESTION_ID:
         $object->setQuestionID($xaction->getNewValue());
         break;
     }
   }
 
   protected function applyCustomExternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
     return;
   }
 
   protected function mergeTransactions(
     PhabricatorApplicationTransaction $u,
     PhabricatorApplicationTransaction $v) {
 
     $type = $u->getTransactionType();
     switch ($type) {
       case PonderAnswerTransaction::TYPE_CONTENT:
         return $v;
     }
 
     return parent::mergeTransactions($u, $v);
   }
 
   protected function shouldSendMail(
     PhabricatorLiskDAO $object,
     array $xactions) {
     return true;
   }
 
   protected function getMailTo(PhabricatorLiskDAO $object) {
     $phids = array();
     $phids[] = $object->getAuthorPHID();
     $phids[] = $this->requireActor()->getPHID();
 
     $question = id(new PonderQuestionQuery())
       ->setViewer($this->requireActor())
       ->withIDs(array($object->getQuestionID()))
       ->executeOne();
 
     $phids[] = $question->getAuthorPHID();
 
     return $phids;
   }
 
   protected function shouldPublishFeedStory(
     PhabricatorLiskDAO $object,
     array $xactions) {
       return true;
   }
 
   protected function buildReplyHandler(PhabricatorLiskDAO $object) {
     return id(new PonderAnswerReplyHandler())
       ->setMailReceiver($object);
   }
 
   protected function buildMailTemplate(PhabricatorLiskDAO $object) {
     $id = $object->getID();
 
     return id(new PhabricatorMetaMTAMail())
       ->setSubject("ANSR{$id}")
       ->addHeader('Thread-Topic', "ANSR{$id}");
   }
 
   protected function buildMailBody(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     $body = parent::buildMailBody($object, $xactions);
 
     // If the user just gave the answer, add the answer text.
     foreach ($xactions as $xaction) {
       $type = $xaction->getTransactionType();
       $new = $xaction->getNewValue();
       if ($type == PonderAnswerTransaction::TYPE_CONTENT) {
         $body->addRawSection($new);
       }
     }
 
     $body->addLinkSection(
       pht('ANSWER DETAIL'),
       PhabricatorEnv::getProductionURI($object->getURI()));
 
     return $body;
   }
 
 }