This short article let you beware of what you need to do when transferring Hyper-V image to another machine.
Normally you will just copy out the vhd file from one machine and paste the vhd file to another machine. After that you will choose New -> Virtual Machine and choose Use an existing virtual hard disk. This will work if there no snapshot.
Use the Export option if you want to retain all the snapshot in another machine after the import.