When I try to delete a CBSubs plan I get the "Cannot delete row id "x" because: Subscriptions exist for this plan".

I tried to go in and individually "Unsubscribe" users from that plan from the backend, but that still didn't allow me to delete the plans from the backend. I could have also checked off "Delete" from the user profile (would that have worked?). In any case, now I don't see the plan on the users who used to have it (this may have been due to me restructuring the plans in the process).

I'm in the testing phase so it's not that important. however, in the future, what is the process/advice on deleting plans? How is this done? Should it be avoided? Is there a way to mass unsubscribe/delete plans from users (detaching them from the plan), in order to delete the plan itself in CBSubs?

Thanks.