I am working in ArcMap 10.3, and am trying to use ArcMap to create contours from a raster for use in an AutoCAD drawing . I created a contour shapefile from a raster, and the elevations are successfully created and can be viewed in the attribute table. Then I used the "Export to CAD" tool to create a CAD .dwg file (version 2007) . I can open the .dwg file in CAD but all of the contour objects have zero elevations. The contour elevation values are not transferring to the CAD file. Need help please.