Problem with buying Forum Access
 

Testing out the buying forum access, I created a forum that is unavilable to all but a certain user group (it doesn't even show up). I then went and made the forum available to purchase, and I purchased it as a regular user. Everything worked like it was supposed to.

I then deleted the purchase from this history, however it still shows as part of the user's purchase history when you pull up the user info in the AdminCP, and the user still has access to the forum.

Bringing up the individual user's permissions, it still shows that they have access to that forum.

How do I go about making sure that I have truely removed the user's access?