you write you can migrate vm BEFORE enabling vmotion ? how?

btw: shutting down the vm and then check the evc-mode that is possible for your hardware is the only option you have. think about a downtime for your vm and then just do it.

the normal way is to deploy the cluster, check all functions and after that put productive vms on it, not deploy vms and check functionality afterwards.

the people here tried to help you - so please listen to them