Automatically replacing some tags with categories on existing forum

[Moin]

Can I/how to convert a tag to a category?

My forum uses heavily tags and tries to keep amount of categories as minimun as possible. But at one category I’ve a lot of topics using same tag so perhaps those deserves a category. Do I have a tool that changes/converts a tag to category? Sure I can take a longer route by creating a category, choosing tagged topics etc., that is no real issue at all, but if I have opportunity I would very much use shorter way (Even asking this took more time that just doing it …