[Feature Request] Merge Old Tag Pages

[Paining1]

Hello, I hope all is well. I was wondering if you knew of a method to deal with old tag pages, that are left after you renamed your tag?

an example is #A/B/C -> #A/B

The tag page c would still exist if we made it.

maybe you could merge the tag pages, like you do the tags?

It makes sense since we are merging their tags.

What do you think?