Hello.
I am an administrator at the VsBattles wiki, and we have problems with that a lot of pages are indexed with redundant nonsense categories, duplicate categories, and similar.
I have spent a lot of time attempting to clean them up, but it takes an enormous amount of time going through hundreds or in sum total a few thousand of pages to clean them of redundant categories or change the duplicates into the proper alternatives. In addition, in the cases when I have finally got rid of a redundant category, it still remains as a suggested option for other users to add all over again, which leads to more cleanup work for me.
What I wonder is if there is some sort of option that I can use to delete redundant categories from multiple pages at once, similarly merge one category into another, or at least get rid of the deleted categories as an option for other members.
This has lead to many hours of work for me, so I would appreciate some guidance. Thank you very much for any help.