problem with Ban User function

[ATVTorture]

We converted to vbulletin from SMF. Our vbulletin had a group called Administrator, where vb has AdministratorS. We moved our Admins to the built-in VB Administrators group which left the imported group empty.

Something I've noticed is when I attempt to ban a user, it wants to move them to my imported Administrator group and that's the only option in the drop-down for "Select which group to move them to". Why would this be and how do I fix it?

Thanks!
Buster