1. A method of migrating a chat messaging service provided for a chat user, comprising: receiving at a second chat server from a first chat server, static information associated with a chat user, wherein the static information is received before the chat user is indicated as being associated with a migration state; receiving at the second chat server from the first chat server, dynamic information associated with the chat user, where at least a portion of the dynamic information is received after the chat user is indicated as being associated with the migration state; and receiving at the second chat server a chat message for the chat user after the chat user is no longer indicated as being associated with the migration state.