7.6 HFA1 - Predefined computer appears as Untracked and won't accept jobs

I've just added my first computer to the CMDB since we upgraded from 7.6 to 7.6 HFA1. The normal procedure would be adding the computer to the predefined computers list, PXE booting the machine and then selecting one of the initial deployment jobs or just dropping a deployment job on to the computer object.

However the computer I have just added has an Agent Health indicator of Untracked. The console reports it is receiving updates from the client, the console shows the IP address and it is pingable.

Has anyone else experienced this? I thought I would ask a quick question here before opening a support ticket.

Howard