... the third party support says that the license is assigned to the computer hardware ...
If the license cannot be transferred to another system, then you would most likely violate the license agreement, if you P2V the system and make it work somehow. Anyway, this seems kind of unusual. What would they do in case the physical system dies?
Aside from this, when you P2V a system it will run on virtual hardware and depending on what the software vendor takes into account for his license check you may or may not be able to workaround the differences. Do you know what's taken into account?
André