I'm using company managed project and a scrum board. When I've tried various JQL filters to remove sub tasks from the done column which were closed in the previous sprint, it removes all my active tasks as well because the sub tasks are tied to the parent tasks still in the sprint. My board is cluttered with old done items from the previous sprint that only seem to go away on their own after 14 days from marked resolution=done. Is there a way to clear these? you can see in my screenshot, the done subtasks were completed in previous sprints, but the parent ticket is in progress. I want to remove those done tasks because they were completed in previous sprints.
