Ability to See Items Already Selected in Restricted Items when Selecting New Items for Restriction

Problem: When needing to add more items to a restricted section of the CA Hierarchy, it does not show which items out of the selection list have already been selected for restriction. E.g., if 200 items have already been restricted out of 500 total items, if it is required to add a further 50 items to be restricted, when selecting these 50 items, it is not possible to see which 200 items have already been selected

Solution: Would it be possible to highlight all items already selected for restriction against a certain value in the CA Hierarchy, so it is clear which items are left to select.