Previously, all plugins stored all their data by username because the usernames would always remain constant and never change. That is no longer true. All the plugins that store player data (PInfo, Towny, Permissions, McMMO, etc.) now have to update and convert all their data to use UUID's instead of names.
In the process of making these changes, there have been a few bugs that pop up.
- PermSync (What synchronizes permissions cross-server) Doesn't fully work.
- Prefixes doesn't always transfer cross-server.