XenServer 7.2 no longer supports "preserve=true" at vm-copy

Works on XenServer 7.1 and 6.5:

xe vm-copy preserve=true new-name-label=<label> vm=<vm-uuid> sr-uuid=<sr-uuid>

Result on XenServer 7.2:
Error: Unknown field 'preserve'

We use this option to have a runnable copy of a vm on a different storage.