HELP!!!

I have three situations, all would be very helpful if I could manually update the mappings of individual files or albums. If this is the wrong sub/community, can you point me in the right directions?

1. I have an album that i accidentally mapped to the wrong artist/album combination and now it won't let me change it because I also tagged it, even renaming doesn't help.
2. I have an album where the 1st and 6th song switched during the mapping/renaming/tagging process and now, even if I rename the files and retag them manually using id3, both lidarr and plex think they're the wrong track
3. I have an album that's not only a standalone album, but also a disc in a box set, I'd rather have it as part of the box set, but can't figure out how to unmap/remap the album to move it to under the box set, when I have the rest of the box set already set up properly

Any help would be appreciated, thanks!