dwg to catdrawing conversion is typically searched by users that are exploring ways how to turn AutoCAD DWG drawing into format used in CATIA software, usually in cases they do not have access to CATIA. CATIA no longer uses .catdrawing files, replacing it with modern formats, so it is unlikely many tools still can save to the legacy format, if that is indeed what is needed.
The default format of CATIA is .catpart, so it might be worthwhile to check out the dwg to catpart conversion entry instead.
Updated: November 2, 2023