The music roll magic still shows up in my list as uncollected even though i have collected it already and it is checked off in my achievement

Music Rolls are not account-wide - are you sure you collected it on that character?

Also, make sure you do a Shift+Click on ALL THE THINGS header to force a refresh. Sometimes music rolls won't automatically check off due to the API not sending a signal out and needs to be forced checked.

Haven't heard anything back in a month. So going to close this now as I'm assuming it works now. If not feel free to reopen or make a new one