I made my drawing on Delta cad, saved as a DFX file. Loaded it into Lazycam and turned it into a Gcode file, then transferred it into Mach3. The Gcode is given a bunch of Z values which are unnecessary (i deleted then in microsoft notpad) but how do i keep these from reappearing?

Also say i made a square shaped object. I want it to be cut out in a rotational pastern, not just random lines at a time, how do I fix this as well? THANKS