I want to copy a volume from an old MacBook Pro to a new one. I mounted the old one using Target Firewire Mode. I made a new APFS volume on the new machine. When I tell Disk Utility that I want to restore to the new volume, the list of volumes to restore from has nothing on it. Why? Is it because the old volumes are HFS+ format, rather than APFS? Will I be able to make a disk image, and then restore from that?