No option to associate Apple ID with user account
Hey guys, I'm hoping you can help me out here.
I have a Late-2008 MBP that I've just upgraded to Yosemite. I'm trying to get my old copy of iWork 09 to be recognized by the AppStore for upgrade, but the AppStore is convinced that it was not purchased (I installed it via DVD). I saw on a few websites that I need to associate my Apple ID to my user account for this to cooperate, but I don't have that option.
FileVault is turned off; I know that can affect this feature.
I've tried creating another account and signing in with my Apple ID while logged on there. When I did that, the AppStore didn't even see that I had iWork installed at all.
I tried setting my password to match my Apple ID account, to see if that would nudge something into cooperating. No dice.
Any other ideas, please?
MacBook Pro, OS X Yosemite (10.10)