The reason I asked for the gcode file is it is a quick way to see if you set your Z-Zero to be at the top (most common) or bottom of your material.
If, in your design in Carbide Create, you set it to the bottom, your cuts will start at a positive value (approximately the thickness of your stock) ABOVE your work zero. If you then set your work zero at the surface of your stock, as one does when using the BitZero, your carve will start ABOVE your work zero as instructed by your settings CC.
I ran a new file using the BitZero and it worked just fine, so there must be something in either the CC file or the CM file. I’m hoping Carbide Support can find whatever it is.