I have a vSphere 6.7 cluster managed by a vCenter 6.7 server that we wish to move to a new vCenter server running 6.7U1. We are using both vSAN and vDS. All the live migration instructions I’ve found indicate that this should be pretty simple — create the new vCenter server, export and import the vDS settings, create the storage policy, run a command on the CLI for each host, then start moving the hosts themselves.
Unfortunately at this last step, it seems that there is no longer a way to add a host to a new vCenter server without putting it in maintenance mode. Of course, this is a big problem if you’re trying to migrate a running/production cluster without downtime.
I’ve already tried disconnecting and removing a host from inventory before moving it to the new cluster, and that also requires it to be put into maintenance mode. It appears that since U1 there is no longer a way to simply move hosts to a new vCenter instance without putting them in maintenance mode, effectively locking us into the existing vCenter instance unless we want to schedule downtime for our cluster.
I saw a forum post about this [here](https://communities.vmware.com/thread/589417) but it was never updated with a resolution. Does anyone have a workaround for this?
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