I have two CPT-onomies, both linked to each other (Accommodation & Room Type). I need them linked so that I can use their values to populate Advanced Custom Fields selectors in each types admin area, but I want to disable the default UI that is injected in the sidebar. It seems to be that the 'Show Admin Column' sounds like it does this. However, when I set it to false, the metabox still shows up. Any ideas?