Autodesk Navisworks comes with ARX plugins for any AutoCAD™ based product, such as Architectural Desktop™, and enables you to export files into NWC file format.
The file exporter is available for any AutoCAD-based product between AutoCAD 2009 and 2015 releases.
Note: If you installed the Autodesk Navisworks software with exporter plugins, and you install any AutoCAD-based software after Autodesk Navisworks is installed, you need to update your exporter plugins installation with the appropriate ARX plugins before you can use them.