After reading a little of changelogs, in the latest snapshot ive noticed than you can convert your old client to new client format in SDK,

The original text: The client SDK has been unlocked to facilitate moving to the new Novetus 2.0 client format. It is generally not advised to host public servers at this time, but I'm not stopping you. If you have made ANY clients, export them to txt, ini, or json formats. Future you will thank you.