Why is it that there are only few elements, as in literally few, that were imported to my SketchUp from AutoCAD? In my case, I was assigned by my professor to do a 3D model of a restaurant interior then surprisingly, I only see a vertical line in my SketchUp? Can someone please help me? 
Did the person who created the file draw correctly in Autocad?
Are all the elements (vertices, lines, etc) at the same elevation? Or a line that was supposed to be 2D was drawn in 3D, with the end points at a great distance ??
https://help.sketchup.com/en/sketchup/importing-and-exporting-cad-files
Hey! Thank you so much for the reply.
Well I suppose, considering it was from a professor from an institution. I’ve tried zooming out from the model, or even clicking the zoom extents, but I still can’t find it. Now, I’m studying about the image you sent me about the unsupported files, especially the XRef and the ADT/ARX objects. I’m quite unfamiliar with these things.
If you have Xrefs in Autocad, use the Bind command (Bind converts the objects in the xref into a block reference).
Learn about importing dwg/dxf
https://learn.sketchup.com/track/3-ways-boost-your-cad-3d-workflow
My blockmate sent a file already. So I won’t problem it anymore. But according to him, the problem was with the scaling of the AutoCAD file. I haven’t noticed that it was still in millimeters, though it was kind of in meters (but annotations were in millimeters). I think I messed up what I said. I don’t know if you can imagine what I’m saying. But all the more, thank you so much for the effort! Problem solved.
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