Same artist listed as different artists

I have 3 albums by “Holy River Family Band”. For some reason, Roon has grouped 2 of them together, and listed the 3rd as a separate artist. This separate artist has exactly the same name however, so I don’t know why it has differentiated it. Any ideas appreciated!

I fixed it by matching the albums again - but I still don’t know why it happened in the first place :slight_smile:

I have this with artist with little or no metadata. No genre for instance. Editing should solve it I hope