This can be a bit annoying but here is what i can suggest to help you on your journey.
1st: Copy And Paste Your Muserver Name It (MuServer2) or whatever.
2nd: Create New Databases Named: MuOnline2,Ranking2,Events2,BattleCore2,
3rd: Time To Change Ports I'm Pretty Sure You Know The Configs For The Ports Change All Of Them So They Are No Port Bind Errors
4th: Change The Databases Names In The Configs As Well.
5th: Open your sql server make the new databases which i stated above.
6th: Now You Must Change The Port In The ServerInfo.bmd to connect to the second server
7th: Allow The Ports In The Firewall
8th: Start the server and see if any errors if not then enjoy if so report back here and let me know and i will help.