Although this is a method for setting up a Legend 2 server, it also applies to the setup of a M2 version server for "Chuan Qi World" because they are all通用 (universal).
Method to retain user IDs, character equipment, and guild information:
Please back up the following files:
All files under D:/mir/mud2/DBSrv200/FDB/ - Character equipment data
All files under D:/mir/mud2/Logsrv/IdDB/ - Player ID data
All files under D:/mir/Mir200/Notice/ - Announcement data