When configuring a restore of a backup of the VMware Plugin and using the 'Rename' option, an error message pops up stating "Rename Not Allowed"
This means that the backups you are trying to Rename and Restore were created with a VMware Plugin version of 2.2 or earlier. Backups done on these versions will not allow the VM to be renamed on restore unfortunately.
There is no way around this issue. However, if the VMware Plugin is upgraded to version 2.6 or above, all new backups will have the ability to be Renamed during the Restore configuration.