Is Surebackup a solution you can use? This will give you the possibility to restore your VM, do some tests, leave it running (this is possible with SureBackup) so you can connect to the quarantined VM and do view / test / whatever you need to do and when you stop the surebackup job nothing is changed.
If that is not possible for you, you can indeed restore the VM to another location but do not forget to start it without network connection. Otherwise you can still run into problems when two VMs (even if they have a different VM name) will be on the network with the same computer name and network name
Hope it helps