Our zone is currently running ZCM11 SP1a, I'm looking into upgrading to SP3. From the docs I see that primary server cannot be upgraded directly from SP1a to SP3, but agents can be upgraded directly. I will also need to upgrade the server OS (SLES11 SP1), so the entire server upgrade will probably be a several evening affair.

So there will be an interim period when agent on workstations is SP1a, but server is running SP2 or SP3. Will that cause any problems?