Hi Youqin,
1. What was the purpose of cloning in your case or was it cloned to avoid time consumed in setting up new system?
---> If the cloned system B is meant to be used for same purpose as System A then you could be benefit by creating "Replication list" & Fedration features available in BO system.
2. Is the cloned system in the same LAN or are they supposed to be in the same LAN?
I guess by cloned CMC you meant you had cloned BO System database/CMS repository?
Regards,
Sandeep Rana