diff --git a/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php b/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
--- a/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
+++ b/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
@@ -977,7 +977,7 @@
     PhabricatorLiskDAO $object,
     array $xactions) {
 
-    $is_new = ($object->getPHID() === null);
+    $is_new = ($object->getID() === null);
     $this->isNewObject = $is_new;
 
     $is_preview = $this->getIsPreview();