I set up the job again, homed and zeroed the router and went to work. After the roughing file was done, I loaded the detail file, ONLY Z-probed the bit, and hit ‘Go’. Everything appeared to be functioning as it should until I got to 95% done and the controller locked up. No way to get it to move, so I had to do a hard reset which lost my previous home and zero coordinates (different thread: https://forum.onefinitycnc.com/t/controller-randomly-shutting-down/3054/4).
Will try this again when I get the new controller installed. Thanks for all the comments - nice to have a great community to draw on!