diff --git a/app/Traits/Import.php b/app/Traits/Import.php
index 15b5b290c..d855dc107 100644
--- a/app/Traits/Import.php
+++ b/app/Traits/Import.php
@@ -80,7 +80,7 @@ trait Import
             }
         }
 
-        return (int) $id;
+        return $id == null ? null : (int) $id;
     }
 
     public function getItemId($row)