diff --git a/app/Traits/Import.php b/app/Traits/Import.php
index 042ce58c8..84440d9cd 100644
--- a/app/Traits/Import.php
+++ b/app/Traits/Import.php
@@ -84,7 +84,7 @@ trait Import
             }
         }
 
-        return (int) $id;
+        return $id == null ? null : (int) $id;
     }
 
     public function getItemId($row)