SketchUp~ CAD mapping to SU line is not on a plane.

Is there a height difference in your cad drawing? This didn't enter Sue after boarding a plane once, if so. If there is a plug-in, it can be solved by flattening the plug-in, and it can be solved without Sue. First, import cad, then select the lens-click the parallel projection, and then click the top view. Then, you can retreat to see all your cad, don't turn left and right! Then export the two-dimensional graphics dwg format. Set the option again, do not extend the cable, and then confirm the export. Just lead it to Sue.