Multiplayer already works and worked all the time, Fastlanes problem was just that we had no decent multiplayer tutorial back then. That led to all sorts of overly complicated and ineffective multiplayer scripts by users and even in AUM.

As to the server code, there are many - we'll have 28 servers of different purposes in the first stage of the project. But the zone servers, which are responsible for player movement and level change, will indeed be programmed in lite-C, with the same script as the clients.