Ok, maybe I'm not explaining it well enough, I'll have another attempt.
Looking at "normal" cemetery category edits, someone might add an extra parameter, or change a website to a different one, or change the coordinates to better ones, or add an afilliation parameter, and so on, to an existing category, they wouldn't bother deleting all the existing data and starting again from scratch, it just doesn't happen.
WHY would BEE tell someone (inexperienced in category creation, editing and CIBs in general), that the category already exists, that they shouldn't overwrite existing data, and then give them a screen to do exactly that ??? Which is what is already starting to happen.
WHY does BEE feel the need to provide a facility for a member inexperienced in categories to overwrite the entire data from an existing category that someone has painstakingly researched, (because the FG data wasn't correct or was incomplete), with that same incorrect or incomplete FG data?
If the category already exists, all that is required is the message to tell the user it already exists and the link to the category so they can add it to their profile. Why would BEE think anything else was necessary?
If someone requests a new category on G2G and it already exists, we don't say to them, yes that category already exists and here's an edit box so you can delete all the existing category data and replace it with this new (possibly incorrect or incomplete data), but that's what BEE is doing.
Please do not dismiss this as being trivial, or insignificant. It is a real concern and I'm not sure why you can't take it on board, why would we be spending so much time trying to get it across if it wasn't real? Overwriting all the existing data is completely different to adding to or editing an individual parameter.
This can be alleviated very quickly, by BEE removing that edit box facility, and providing a message that the category already exists, and a link to the existing category. Nothing more, nothing less.
After all, the member started this process because they wanted to have a category to add to their profile, they weren't sure how to create it, so used BEE to do the creating. If the category they want already exists, that's all they'll want to know.