I'm starting in to add your Category. I've been wandering about in the depths of the approved (usually by default) profiles ready to complete a merge. I just scratched my head, told myself "I can't do this", as in I hadn't a clue to the LNAB.
I'll mark both sides of the proposed merge, and it will give you lots of new candidates to clean up. I've seen quite a lot of them, IIRC