reset errors on update (#12550)

* reset errors on update

* add empty line

---------

Co-authored-by: Oliver <oliver.henry.walters@gmail.com>

src/backend/InvenTree/importer/serializers.py

@@ -180,6 +180,28 @@ class DataImportRowSerializer(InvenTreeModelSerializer):
             'complete',
         ]
 
+    def update(self, instance, validated_data):
+        """Allow manual editing of extracted row data.
+
+        This is used by the importer UI when a user manually corrects a row,
+        for example by selecting a missing foreign-key target. In that case,
+        the edited ``data`` payload must become the source of truth for
+        subsequent validation, rather than being silently ignored in favor of
+        the original ``row_data`` extracted from the import file.
+        """
+        if 'data' in validated_data:
+            instance.data = validated_data['data']
+
+            # Clear stale validation state so the row is re-evaluated against
+            # the manually edited data on save()
+            instance.errors = None
+
+            # A manually edited row is not yet committed, even if it had
+            # previously reached a completed state
+            instance.complete = False
+
+        return super().update(instance, validated_data)
+
 
 class DataImportAcceptRowSerializer(serializers.Serializer):
     """Serializer for accepting rows of data."""