Just curious??......why go to the trouble of importing a foreign diagram to Xactimate when you'd have to dummy up the estimate anyway? I haven't used X now for the past couple of years, and maybe the X roof sketch program is functioning better now, but remember always having to tweak the estimate to make it right.. Many roofs I've inspected were impossible to do on sketch. Hand-drawn with sidebar calculations, and then scanned & uploaded with the estimate. Might call it old school, but indisputable scopewise. Your CAD program accomplishes the same thing, but whether you can make it write the estimate is doubtful. If your examiner doesn't like it, ask them to duplicate the roof diagram on the program just once and see what results they get. They won't bother you again.