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Name:	Quiet Time.png 
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a4Hire,
CAD produces a vector drawing that is not compatible with Xara. Therefore, I make a screenshot of the CAD drawing and paste/size it in Xara where the necessary lines are then traced to form vector objects that can be edited into their final form.
The above drawing shows the original CAD drawing. It contains additional information because the original was rendered in another medium. But you can see the basis is there to be traced in Xara. Additional items such as the glasses were also added to produce the final picture.