I could add more "batch" export/import support, but i have my doubts this is a common use case.
Ah-ha! a Feature Request!The editor won't do it for you right now, but if you want to do it manually, you can use a hex editor to copy the bytes from one save to another. The garage data starts at 0xB760 (46944) and goes on for 17,024 bytes, ending at 0xF9E3 (63971). I could add more "batch" export/import support, but i have my doubts this is a common use case.