I've recently installed Windows Server 2012 to my test server to run Hyper-V test environment. I have bunch of old VMs which were created in Windows Server 2008 R2 Hyper-V which I didn't export in advance - I just have all VMs files created on old server. I was able to successfully import VMs with fixed VHD, but unable to do it with those which use differencing disks - import wizard unable to handle this. Most of my old VMs using differencing disks tied to one parent VHD.
Any advice on how to import them into Hyper-V 3.0?