I have a dummy circuit with 2 traces and 6 holes.
I exported the PCB as Gerber, when I look into Carbide Copper I see this
I would expect Carbide Copper to mill out all green part an leave the copper for the traces, but it does the opposite, it mills out the traces.
For sure I am missing something obvious.
The all tiny project attached here
pcb.zip (11.7 KB)