Andrew C!
Been around a while....
So anyway... I was happily ripping a 10 CD box set of Mozart Piano Concertos... (Concerti?) by Vladimir Ashkhenazy.. on the Decca 'London' label. Although the Innuos 'Disc Ripper' found the correct artist, track title and length etc., etc.. it managed to apply cover art from the box set to only about four of the discs.. and cover art for Alfred Brendel.. on Phillips.. to the rest. Quite bizarre.
Yeah - I know what you mean. It did this to me with and ABBA box set - I quickly learned how to change cover art in Roon, and also link multiple Cd's to one album.