diff --git a/question/format.php b/question/format.php
index 9ab764b5763..39599826e3d 100644
--- a/question/format.php
+++ b/question/format.php
@@ -372,6 +372,7 @@ class qformat_default {
                         $this->category = $newcategory;
                     }
                 }
+                $transaction->allow_commit();
                 continue;
             }
             $question->context = $this->importcontext;