Strange Problem When Fixing Category Upgrade Delima

Ok, so I’m one of those people affected by the problem caused from upgrading their wordpress installation to the newest version…

All of my categories disappeared… they are there, it is just their names are gone and so you can’t see them….

Tried the solution posted here:

https://blog.cumps.be/wordpress-26-upgrade-fix-missing-categories/

and here:

https://remy.supertext.ch/2008/08/wordpress-upgrade-to-26-deletes-all-categories/#comment-13774

However, still one strange problem existed…

Every time I locate the number of a category, and go ahead and try to edit it as in giving it its original name, a number is automatically assigned to its name (after the name), and therefore it has a new url link that differs from the old one because of that number…

Say I wanted to name a category: (Review) which is its original name before upgrading and the problem… it will end up being (Review 2) because I think wordpress detects another link with the name review, so it gives it a number which messes everything up! Tried everything to avoid the number being assigned, but no use…

Can anyone suggest a solution for that?

Thanks…