Windows VMs which are using Measured Boot - https://learn.microsoft.com/en-us/windows/compatibility/measured-boot - can not be migrated, because Measured Boot is a mechanism to prevent any kind of device changes.

Alternatives to migration are to re-create the Windows vm directly on OCPv.

This should be mentionde siomewhere around https://github.com/kubev2v/forklift-documentation/pull/566/