I attempted to send a manufacturer a drill file in Excellon format, but they informed me that several 0.6" holes I wanted drilled were not in the Excellon drill file. I browsed through the file and it appears that they are not present.
I checked one of the holes and it is in the "holes" layer as a circle. In one of the forums it is suggested that a circle in the holes layer is not correct.
Is there some magic to tell Eagle to place these holes in the Excellon drill file?