I have a design with both thru vias and blind vias from layer 1-2. In a location where I have a 16 pin quadpak I have an out gassing hole in the center pad for manufacturing purposes. For some reason in my NCDrill files for the Thruhole and the blind via files wherever there is an out gassing hole PADS shows a blind via in the NCDrill file at the exact same location but visually in the design there is no via present. I was wondering if this is a known issue in PADS Layout 9.4 . I was alerted to the multiple drills by the board house.