Did you try instantiatiing a new VM and then undeploy it?
Here is the relevant log from the other thread:
Sat Jul 21 11:00:58 2018 [Z0][TM][I]: Command execution failed (exit code: 2): /var/lib/one/remotes/tm/ssh/mv localhost:/var/lib/one//datastores/0/51 virt.xxxx.de:/var/lib/one//datastores/0/51 51 0
Sat Jul 21 11:00:58 2018 [Z0][TM][I]: mv: Moving localhost:/var/lib/one/datastores/0/51 to virt.xxxxx.de:/var/lib/one/datastores/0/51
Here the tm/ssh/mv script is ordered to move VM’s home folder from hypervisor named localhost to front-end named virt.xxxxx.de. If it is a single host both source and destination should be with same host:path and tm/ssh/mv will hit the following condition: https://github.com/OpenNebula/one/blob/master/src/tm_mad/ssh/mv#L62
That will skip the entire directory move because it is same host.
BR,
Anton