You need to follow this document.

Creating and assigning a management server list for a Symantec Endpoint Protection Manager

http://service1.symantec.com/SUPPORT/ent-security.nsf/2326c6a13572aeb788257363002b62aa/e2ac3b646ae21969882573c20063533f?OpenDocument

Creating and assigning a management server list for a Symantec Endpoint Protection Manager

http://service1.symantec.com/support/ent-security.nsf/docid/2007123110045548

let me know if you have any questions.

You can change the priority and the assign the new policy to the desired groups.

When you say we moved the  some clients to new site what procedure did you used ? ( As in was the sylink replced or the MSL was modfied)

Also is is OLD SEPM still running if yes you will have that issue.

As old SEPM still has the information about the client beacuse of this we have seen that either the client  will not commuincate with the SEPM or will commuincate with the old SEPM

Please  stop the SEPM service on the old SEPM and observe

Pls clarify few point....

How you have installed two servers... Is it a stand alone two deferent servers or one is primary server and other one is replication partner.

If you have replication setup then you have to set the management server list with proper ip address of the serer.

If its different server then you have to replace the syling file of the new server in all the client which you want to connect the new server. You can also use Sylink Replacer
http://www.symantec.com/connect/articles/how-run-s...