kaxil commented on a change in pull request #15308:
URL: https://github.com/apache/airflow/pull/15308#discussion_r614465134
##########
File path: airflow/models/dag.py
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@@ -1504,6 +1504,8 @@ def filter_task_group(group, parent_group):
if isinstance(child, BaseOperator):
if child.task_id in dag.task_dict:
copied.children[child.task_id] =
dag.task_dict[child.task_id]
+ else:
+ copied.used_group_ids.discard(child.task_id)
Review comment:
Can you write a unit test for it please?
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