Moving Hyper-V from Windows 2008 R2 to Windows Server 2012 R2

You can't import a virtual machine created on Windows 2008 R2 into a server running Windows 2012 R2.  There's some aspect that's incompatible.

Here's what worked best for me:

Stop the old VM on the Win 2008 R2 machine
Copy the VHD file to the Win 2012 R2 machine
Create a new virtual machine and tell it to connect to an existing virtual disk
Choose the VHD you moved

If you get error 0×80070569 like I did when you try to complete the new VM wizard, restart the Hyper-V Virtual Machine Management per this page:
http://www.wolffhaven45.com/blog/hyper-v/hyper-v-error-0x80070569/