You should be able to convert DWFX files to W2D format in various Autodesk programs through the use of File → Save as.. or Export function.
Convert Autodesk Design Web Format to Autodesk Design (Drawing) Web Format 2D file.
We have found 3 software records in our database eligible for .dwfx to .w2d file format conversion.
Microsoft Windows software - convert dwfx to w2d on Windows
Leading 2D and 3D CAD development software from Autodesk
Convert from dwfx file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned dwfx to w2d. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Autodesk Inventor is modeling application used to create 3D digital prototypes.
Apple macOS / Mac OS X software - convert dwfx to w2d on OS X
Mac version of popular Autodesk AutoCAD software