Terry – I just replied to your email, but the PDF you are working with contains raster walls NOT vector walls. That is why they do not come in. I tried it with Inkscape converting to dxf and importing into SU with same results (except Inkscape did not bring in the text like PDFi does). None of these programs will bring in raster images (images, colors, bitmaps, etc.)
What I do when I get these is to scale the resulting vectors and then use the dimension extensions and the guide tool in SU to add temp guides for me to trace walls.