I have two copies of the same album: Rock 'n' Roll from John Lennon.
There are about 12 variants of that album. See https://musicbrainz.org/release-group/316bd588-952e-34b0-aeff-b8fd43ef9cf8

I have a 13 song version and a 17 song version. The 13 song version is better quality so I want to retain both. These were in two folders.
I used rename and both folders end up in one. With my naming scheme:
John Lennon/Rock 'n' Roll/

In that I get both "Stand by me.mp3" and "Stand by me (1).mp3"

improvement suggestion is that if you are moving an album and the destination album name already exists (and you are not updating that one) that the folder name gets the (1) suffix and gets all the data for that variant.

So I would like to end up with folders "Rock 'n' Roll" and "Rock 'n' Roll (1)"

This allows one to keep multiple versions of the same album and locate them more easily

Also it is helpful to identify duplicate albums.