You can use CATIA form Dassault Systèmes S.A. to export Dassault Systems Universal 3D XML file (*.3dxml file extension) to AutoCAD Drawing file format (*.dwg file extension).
Convert Dassault Systems Universal 3D XML document to AutoCAD drawing.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert 3dxml to dwg on Windows
A PLM/CAD/CAM/CAE software suite
Convert from 3dxml file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.