I've decided, after a long time, to publish the source code of my little utility on CodePlex : http://vmmove.codeplex.com

It that allows to perform attach and detach operations of Hyper-V VMs.

I discussed a while back the origin of Hyper-V VM Mover, and as of now, Microsoft still has no official method for attaching and detaching VMs without export and import operations.

Feel free to submit updates and comments on the tool !