Unfortunately, I am not at all clear what the problem is that you are trying to explain but here goes.
Firstly, restoring from the latest MC backup is always the right thing to do in the event of some tagging/import disaster. Always take a backup before doing any bulk tagging.
Perhaps you could try and give me a more specific example of the problem, using a real album, song and artist and be very specific regarding what the filename is, the Name tag is and what the Album tag is. Take some screenshots if possible, to show more clearly what is happening.
If you are looking at an album view and the files that you have imported and renamed have the same Album tag as an existing album then I think they will show up in that view, but as I said at the beginning, I'm not really clear what you are trying to explain.
Terry