Say I create a "paid" user group and create a user upgrade that promotes paid members to the "paid" user group. The paid user group has expanded signature permissions including images, links, extra length, etc. A member pays for the promoted account and edits his/her signature to take advantage of these expanded options. The user then cancels the subscription / doesn't renew and XF removes the "paid" user group for the member in a month or so. What happens to the signature when this happens?
