Over the last year and a half I have migrated several SQL FCI's to new windows clusters, new hardware, windows and SQL versions. To accomplish this with minimal downtime I had to setup the cluster roles ahead of time with everything ready to go prior to doing a final tlog backup/restore and rename of the cluster instances. This has worked well for us however SQL Monitor creates a new server record when the instance is renamed and never gets rid of the original name of the the new instance. This has left me with SQL Monitor still showing this nonexistent instance with no way to remove it. This in-turn is now showing up as an instance that needs to be updated, when actually my entire environment is current.