this is the results you will get if you use the Cut All feature, is that what you are using? If so then you will need to only have the toolpath visible when doing the Cutall.

After you create the toolpath, highlight it and then change the attributes, specifically the layer. Then blank the toolpath. Next, do a "Select all" and then blank everything that is left. Now unblank the toolpath and then create the program. This should prevent the program from including the font.