Register: If you have a virtual machine were you have déjà put tous of le virtual machine files exactly où you want them, et you juste need Hyper-V to start using le virtual machine où it is.
Restore: If votre virtual machine files are stored on a file share / removable drive / etc… et you want Hyper-V to copy le files to le approprié location for you, et alors register le virtual machine.
Copy: If you have a set of virtual machine files that you want to import multiple times (e.g. you are using them as a template for nouveau virtual machines) this is what you want to choose. Cela va copy le files to an approprié location, give le virtual machine a nouveau unique ID, et alors register le virtual machine.
Source: Technet forums: Hyper-V Import Wizard: Choose Import Type?
