Register
Uses the existing unique ID of the virtual machine and registers it in-place. Choose this option if the virtual machines files are already in the correct location.
Restore
Uses the original virtual machine’s unique ID and also copies the virtual machine files to the default location specified for the host.
Copy
Creates a new unique ID for the virtual machine and also copies the virtual machine files to the default location specified for the host.
What sub-folders are created when exporting a VM
Snapshots, Virtual Hard Disks, Virtual Machines