We see cases on the discussion boards like this and at our courses and wondering what can be done:

Why is veneer #9 in the design mode ok but when I exit the design mode, it fills in the lingual???

Most of the time, all it takes is the RESET of MARGIN LINE and redrawing. In a Biogeneric Copy case, it may take the RESET of COPY LINE in conjunction with the margin. In fact look what was said by the poster:

Thanks Mark!  I did try modifying the margin in the area where it had the defect first but that didn't work so I reset the entire margin and the copy lines and PROBLEM SOLVED!  Thank you!

Problem solved!!!!!! Love hearing that. If you have a CEREC problem, ask you questions at www.cerecdoctors.com