The simplest way I have found to do the hand editing is always ensure that the diagnostics in the lower left corner of CM are showing when I do a cut, so that I can see the line number.
Then I open the tool path file (of the failed cut) in a good text editor.
Go to the line that CM said it was at, then do a search for the previous ‘(’.
MeshCam does a good job of commenting each ‘layer’ start.
Once I find the layer start, I delete everything above that except the prolog of the file (first ~10 lines or so)
Save it as a new file, usually the same name appending the % starting point.
Now load and run this new file without changing anything on the nomad itself.
Also, I sometimes use CAMotics to visualize the tool paths, and then play with the line number slider to see where I want to start/restart a job.