Wow, that was frustrating. I tried importing the Mach3 xml but, as pointed out, it does not seem to work very well.
I had created a new profile labeled “Mach3”, and then did the xml import. The axis drives step and dir are all screwed up. When I try to change the step and dir to the correct pins, the change is not sticking. I had turned off the feature where the inputs had to be Entered per the excelllent suggestion from CL_Mototech.
I am not sure whether the inability to make changes is because UCCNC is giving me the flashing Reset that I am unable to clear.
I tried doing this on the touchscreen I had set up, but I can see that I need to go back to the regular monitor and keyboard and mouse for this futzing around period.
At least I have an authenticated version of UCCNC up and running. This is the first time that the mill has had other than a demo version control software.
Baby steps...