Albums with same name but different artists grouped together
I have an extensive collection on iTunes,but on holiday recently noticed that my iPod had merged two albums with the same title but different artists. I know of the Greatest Hits problem and I have more than one instance of two albums bearing the same name and theyre ok. They are separate on iTunes in my laptop so only merge when syncing to the iPod. Why is this one different. I've even deleted one of them but when I add it back it merges again.
Windows, Windows 10