Fascinating. I went to guest services and they told me they couldn't see any legacy Six Flags membership addons and I was told I would have to speak to corporate—they didn't offer any solution at the park level today.
Preferred parking was also not working for grandfathered Six Flags memberships. Guest services said that's a known issue but again, no real solution since the car was already parked by then. Seems like if it's a known issue, they should be comping people with preferred parking at the booths automatically? Seems like a simple solution...
Also also, speaking of guest services, the removal of the guest services counter inside the park is a complete nonstarter. Being forced to exit and re-enter to fix issues is absurd.