What carried over from the old server

The migration brought across almost everything:

• Your account — handle, profile, and bio.
• Your games — both finished games and ones still in progress, with their full move history, so you can pick up mid-game exactly where you left off.
• Ratings and ranks — your current rating came across. See Ratings and ranks.
• Private messages and open waiting-room challenges.

What did not carry over: passwords (set a new one when you claim your account).