Hello Plamen,
yes its an odd one. like you said bsod after the conversion would be what you would expect.
I've carried out the conversion VtoV and both times the Virtual on the HyperV bluescreened at 90% the first time and 84% the second time.
I've had a look through the windows virtual & VMware conversion logs and nothing obvious jumped out at me but then I've a novice at VMware at this point.
I'll get my hands on the logs and upload as I'm not onsite currently.
Bill