Coordinates in SketchUp

I’m trying to get contour lines which I created to be at the right coordinate in AutoCAD. When I export as KMZ, the contours fall right into place–which is great. But when I open in AutoCAD, it does not know where it’s at. Any suggestions?

likely contour you created in AutoCAD in 2D, so that when you import the SU does not exist or change shape, try to use a polyline in AutoCAD in shaping the contours and then extrude so that a 3D form thus the import file does not deform.
hope it is useful