Upgrade to 12.1.4 to 12.1.5 /Server named changed

We have just upgraded our SEPM server and now all the clients are not communicating to the single management server. The upgrade was successful but when looking at the client connection status the “last successful connection” was made just before the upgrade to the server name which was DOMAIN but not on the “Last Attempted Connection” was made to Domain.xxxxx.local (same port)

It appears that the upgrade process uses a different server name?

Thanks

Andy