Hi.
Can you try to have a VM setup within XenOrchestra and then use Clonezilla to get the machine over?
Power down the Rocky Linux VM, boot from a Clonezilla ISO and do the same thing on a VM in XOA.
You should make sure to have at least the same or a little greater amount of storage on the new VM on XOA
as it was on the VMWare platform before starting the clone.
Just to have a fallback option in case the XOA import mechanism has a problem.
Best regards,
Marc