I'm pretty certain this is some other drafting program that our customer is using, although I also have SolidWorks experience. I have been even more perplexed, because I have seen several PDFs where I had to break shapes, _then_ it would print all the lines, or at least more of them. So Xara (and yes, those pedantics who will insist on the proper name, I know I am misusing it, but their new naming scheme sucks) has issues with PDFs that need addressed.
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