Fixed bugs causing incorrect computed attributes in imported data

app/Service/Import/ImportDatabaseHelper.php

@@ -188,6 +188,17 @@ class ImportDatabaseHelper
         return $model;
     }
 
+    /**
+     * @return array<TModel>
+     */
+    public function getCachedModels(): array
+    {
+        if ($this->mapKeyToModel === null) {
+            return [];
+        }
+        return array_values($this->mapKeyToModel);
+    }
+
     /**
      * @param  array<string, mixed>  $identifierData
      * @return TModel|null