Can you copy the auto cad drawing, ctrl c, start new part in solidworks and ctrl v paste, save part.
Insert part into assembly then it should show up in same drawing view in drawing?
I tried this just now and it doesn't seem to work. In order to get the lines from the ACad drawing to show up in the drawing, it needs to be inserted as a sketch when trying your part technique. You can't use the drawing to generate a feature (such as extrude) due to too many closed contours, but adding the "part" to the assembly works. However, in order to make the sketch visible on the drawing, you have to make sketches visible (View -> Hide/Show -> Sketches). But regardless, when I do that, the sketch lines are still on top of the modeled part in the drawing...