When we were on vBulletin, we had several usergroups. I had created about 15 user-groups corresponding to ranks. Those got carried over to Xenforo during import. I'm now planning to switch to a much simpler structure - Admins Mods Registered Banned Unregistered / Guests Group - I Group - II Group - III I wish to know, what is the right way to make this change? Should I just delete the custom usergroups -> then create new usergroups -> set promotion?