Depending on your comm software, you can exchange "formats" which what actually would be happening is the file extension being exchanged at transfer. It's just a simple replace script. But here's the catch.... You need to be able to track which file is originally which format so that when you send it back to the machine, the extension gets exchanged to the correct for loading.
Mazatrol programs are not downward compatable. And in some cases, going upward may require a bit of editing. Even if you took them out using 3-digit format, the version codes are different (the start string) so the control would still have problems translating.
So, sounds more like the simple fix here for you is to call Solutionware and upgrade your Mazacam version to accept the new file types.
It's just a part..... cutter still goes round and round....