I just tried it again and there's an easier way. You don't have to remove cuesheet from each file with tag editor at all.
It's all about cuesheet tags. But why does MB keep showing them even when those tags are removed? Because MB's database still keeps the record for those files. To fix this, you need to change file URL so that MB recognizes them as new files.
1. Select all files and go to Tools> Tagging Tools> Remove tags.
And select "remove specific tags" and remove all "cuesheet" or "filecuesheet" tags.
2. Remove those files from MB (only from inbox or library not from computer)
3. Exit MB and move those files to a different folder.
4. Open MB and reimport those files and now the cuesheets are gone.
Dude i dont know what the hell happened. ok
1.- I dont have any "filecuesheet" to remove.
2.- I did the steps you said 1 song went out of its album (in windows explorer) i put it back in its album added all the songs again to mb and stayed the same number of songs 161 (now i have more).
3.- I tried to remove tags again and now i dont have any "cuesheet" tag to remove. but i still have 161 repeated songs.
Cant really believe i have been all day doing this..