@patfan1222 one thing you can do to see if the issue is with LO or SU is to print the Scene from SU to pdf. This will use the rendering engine in SU (the same one that is used in LO) to produce the pdf and compare the images.
In this case it does look like it is an issue with the SketchUp hidden line renderer and not a LO issue.
544059719_Marc’s Office_5072.pdf (287.3 KB)
It might be best to uses Colin’s suggestion to get the proper look.
@nmason what you are see is related to the above with our hidden line renderer as well. One solution you could try is to adjust the viewport so that it is displaying the lines properly, then add a clipping mask so that it cuts the viewport to size you would like. This does not always work but is worth a try.
Trent