Yeah I can lock the columns that don’t need to be edited by the community. It looks like the missing ROMs are the ones that were listed as having issues- seems someone deleted them. I’ll see if I can revert back to before they were deleted or at least put them back in by hand since I have backups in a separate folder for when I knew someone would make a mistake (I’ve done this before ha ha)

To get rid of all the clones I usually just build a merged set with clrmamepro and it gives me about 1000 instead of 2200.