- The deep overlap filter will give you a list of overlap files in your workspace and/or files in a stream above your workspace.
For stream overlap, once you resolve the deep overlaps, you will need to promote those changes into the stream where the overlap appears to clear this status.
If you want a clean workspace wrt your basis stream, I would recommend you purge (revert to backed) any elements in your default group and pending filter. Once complete, update the workspace. Now your workspace should be identical with the basis stream.