Editing multiple tracks changes Album Artist [#6523]

[Lowlander]

Steps to reproduce:
1) Select an Album where at least one tracks has an Artist value different from the Album Artist
2) Select 2 tracks where Artist = Album Artist
3) Change Artist value
4) See that Album Artist is also updated

This shouldn't be the case as when you edit a single track this doesn't happen

[Dreadlau]

I can confirm that behaviour.

[Lowlander]

Thanks, added as: http://www.ventismedia.com/mantis/view.php?id=6523