1.  Scan as you normally would on a US order, hitting the forward arrow to record the 2nd box.  

2.  After recording the SECOND box hit the BACK ARROW BOX # back to BOX #1.  Make sure the weight is recorded.  (For some reason the system does not save the 1st box so we need to go back after recording Box 2 to reimput Box 1.  Hit F8, put in all of the NAFTA data and then F10.  Both Labels will print out properly.