We currently have ZCM 10.3.1 and will be upgrading to ZCM 11 SP2.

I assume that once all the primary servers have been updated the agent update takes place automatically
when the existing 10.3.1 agents refresh.

Can this be controlled as to which workstation are updated with the latest agent and which are not.
When the agent is updated, is this written back to the database so that device will not be updated again.

The reason I ask is a lot of our lab machines run deepfreeze and are frozen. The agent might update itself
upon refresh, and tick it off in the database as complete. When the workstations reboot, they will be set back to
their original state wich is 10.3.1. Not sure how this will be handled.