remove extra when serialize

core/dbt/artifacts/resources/v1/model.py

@@ -52,4 +52,10 @@ def __post_serialize__(self, dct: Dict, context: Optional[Dict] = None):
         dct = super().__post_serialize__(dct, context)
         if context and context.get("artifact") and "defer_relation" in dct:
             del dct["defer_relation"]
+
+        # delete extra keys that should't be serialized
+        if self.extra:
+            for key, _ in self.extra.items():
+                if key in dct:
+                    del dct[key]
         return dct

core/dbt/contracts/graph/manifest.py

@@ -1206,7 +1206,6 @@ def writable_manifest(self) -> "WritableManifest":
         self.build_parent_and_child_maps()
         self.build_group_map()
         self.fill_tracking_metadata()
-
         return WritableManifest(
             nodes=self._map_nodes_to_map_resources(self.nodes),
             sources=self._map_nodes_to_map_resources(self.sources),

core/dbt/contracts/graph/nodes.py

@@ -475,8 +475,6 @@ def __post_serialize__(self, dct: Dict, context: Optional[Dict] = None):
             del dct["_has_this"]
         if "previous_batch_results" in dct:
             del dct["previous_batch_results"]
-        if "batch" in dct:
-            del dct["batch"]
         return dct
 
     @classmethod

tests/unit/contracts/graph/test_manifest.py

@@ -96,6 +96,7 @@
         "deprecation_date",
         "defer_relation",
         "time_spine",
+        "batch",
     }
 )