Hyper-v migration. This is an offline migration (not a live migration). Here's how:
On the older HYPER-V host:
-shutdown the VM off gracefully.
-click ACTION > EXPORT (at the top).
This will export the entire VM somewhere. This can be an external drive or a network share.
On the newer HYPER-V host:
-click ACTION > IMPORT-VIRTUAL-MACHINE
-select the folder of the EXPORT (from above).
-select REGISTER THE VIRUTAL MACHINE
This will leave the VM where it is.
-select RESTORE THE VIRTUAL MACHINE.
This will place the VM where you tell it to.