Thanks for the reply Luc.
move-vm : 15/10/19 3:42:41 pm Move-VM When migrating a VM to a different vCenter Server both Destination and Datastore need to be specified. No other destination types but VMHost/Resource Pool and Datastore are supported for Cross vCenter vMotion
VMware PowerCLI 11.2.0 build 12483598
VMware Cis Core PowerCLI Component PowerCLI Component 11.2 build 12483642
VMware VimAutomation VICore Commands PowerCLI Component PowerCLI Component
11.2 build 12483638
VMware VimAutomation Vds Commands PowerCLI Component PowerCLI Component
11.2 build 12483615
At the moment workaround is the following passed to move-vm datastore option
-datastore (get-datastorecluster -server $dst_vc $datastore_cluster | get-datastore | sort-object -property FreeSpaceMB -descending | select -first 1)
The latest PowerCLI releases (currently 11.4) did include some Move-VM changes.
It might be worth trying an upgrade.
If that doesn't help, I would still suggest opening an SR.
At least the help page for Move-VM is incorrect.
Upgraded but still have the same issue.
Thanks for suggestions.