Hi Redsunflower -
Sounds like a bug! I think we've fixed something like this before, but there may still be some buggy code in there (the upgrade/downgrade stuff is fairly complicated).
Your best bet is to send a message to tech support. Make sure to mention what you're trying to upgrade from/to, and what Web ID you're trying to do it with. Our Dev team will take a look and see what the problem is.
- Jeff @ DreamHost
- DH Discussion Forum Admin