When I made a set prior to installing AMR, I get a little icon on the piece of gear, color coded for the set it is in. If I had one piece in multiple sets, it had multiple little color coded boxes on the icon.
Since using AMR, I do NOT get that little icon. Even when I resave the set with a different name, I do not get the icon. Only sets saved prior to installing AMR have the icon.
I assume this is the default UI, since I do not have any other equipment addons. Although I am not sure about that : )