By default every time you save the Project motosim save the backup of the robot.
in the cell folder, search for the folder of the controller you want and ther is a filé vrc.bin and vrc.bin.bak
Those are backups when you have last saved the simulation.
Seems like I'm having a similar problem (MotoSim EG-VRC 2018). I tried to save via Job Pad and push to a live controller via Ethernet. MotoSim crashed and now I can't move jobs between my live and simulated controller. Great software!
What's the best way to recover? I have a CMOS.bin I can pull from the live DX200 controller (there's no CMOS.bin I can see from the MotoSim backups), but I need the user frames, tool interference, etc from the simulation.
As said by ljuba, you need to look for a VRC.bin, and not a CMOS.bin.
Then you can restore your simulation from that, and save the needed jobs, tools etc.
Then grab the CMOS.bin from your controller, create a new simulation from that, and import your files.
After that, avoid the Job Pad like the plague!
If you need to write jobs with a text editor, try the Job Editor - it works fairly well, despite being just as much a blast from the 90’s, as the rest of the Motoman software suite! Good luck