diff --git a/src/applications/ponder/editor/PonderAnswerEditor.php b/src/applications/ponder/editor/PonderAnswerEditor.php
--- a/src/applications/ponder/editor/PonderAnswerEditor.php
+++ b/src/applications/ponder/editor/PonderAnswerEditor.php
@@ -10,6 +10,7 @@
     $types = parent::getTransactionTypes();
 
     $types[] = PhabricatorTransactions::TYPE_COMMENT;
+    $types[] = PhabricatorTransactions::TYPE_EDGE;
 
     $types[] = PonderAnswerTransaction::TYPE_CONTENT;
     $types[] = PonderAnswerTransaction::TYPE_STATUS;