If Song Sergeant has found inconsistent artists, it renames them, but also sets the album artist to the same name. I'll give an example:
Bobina feat. Betsie Larkin - No Substitute For You is renamed to Bobina With Betsie Larkin - No Substitute For You.
Before it was renamed, all tracks of the album had Bobina as album artist. After it, No Substitute For You has Bobina With Betsie Larkin as album artist.
It took me a while to find out what was messing up my library and today I found it Note that iTunes will display 2 albums after the renaming because there are 2 album artists. I had to reset some of my album artists to merge my albums back to one album.
I hope you can fix this in the next release! Thanks.