When I create a pdf file of my drawing, a component disappears from one of the section views, and the bottom half of the component disappears from the other section view. It sometimes shows that way in the Proe Wildfire 5 .drw file, but then it returns to normal when I update the display. I am attaching a couple of screen shots of the pdf. You can see the dimension line goes down to where the component should be showing.
