Be sure to read the general installation instructions of the ar library. Do not expect perfect results, but in general export will work better than import
From the menu choose:
File > Import > EveryDwg (.dwg;.dxf)...
A file window will ask for the filename to be imported.
Then proceed like you would do for dxf import.
From the menu choose:
File > Export > EveryDwg (.dwg;.dxf)...
A file window will ask for a filename. Give it a .dwg or .dxf extension.
Afterwards you will get a menu with all possible dwg or dxf versions.
Then proceed like you would do for dxf export.