diff --git a/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php b/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php
--- a/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php
+++ b/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php
@@ -149,5 +149,19 @@
     return parent::getIcon();
   }
 
+  protected function newRemarkupChanges() {
+    $changes = array();
+
+    $type = $this->getTransactionType();
+    switch ($type) {
+      case self::TYPE_PREAMBLE:
+        $changes[] = $this->newRemarkupChange()
+          ->setOldValue($this->getOldValue())
+          ->setNewValue($this->getNewValue());
+        break;
+    }
+
+    return $changes;
+  }
 
 }