:(edit conflict) (copied from my talk page) If you check WP:REPAIR, you'll see that there's a technical limitation that categories cannot be moved.  The only option left is to the cut-and-paste. -    
 ::On reflection, you're probably right that that's not the best place to ask for help. I think admins can rename categories, but the people at WP:REPAIR are less likely to be comfortable doing this. Somewhere at CFD is probably better. I'll ask about the best approach.