If the Symantec Backup Exec job history takes a long to load and when it does, it is blanked. This usually means the database is too large and needs to be compacted. Use the commands at your own risk.
Migrating Symantec Endpoint Security Management Server
Symantec Endpoint Protection is a marriage of Symantec Antivirus 11 and Sygate Firewall. As a result the management server is quite a different animal from the previous version. It is much more similar to Mcafee ePO.
Migrating Anti Virus Servers
This is much more complicated than what it seems. If you are not careful, you may end up doing a floor by floor audit.