GKCs have never been able to be copied between the top level of the module and map components.
There is one checkbox on a map-level GKC that does not appear (not relevant) at module level.
It would be neat if GKCs could be copied between module & map levels. A reasonable assumption could be made about the initial setting of the checkbox when a GKC is copied from module to map (suggest leave it clear, as designers using this new feature should already be aware of Fast Search, and also any module level GKCs will be searching all maps unless constrained by the specific search criteria).
Issue #10614 created.