Unfortunately we have not found any particular information about drf to fbx conversion, but in broad sense this is export of 3ds Max projects/models/scenes to Autodesk Kaydara format (.fbx) which is certainly doable.
If you face particular issues or have difficulties with export to FBX format, it would be perhaps wise to contact 3ds Max support or some online community for help.
Updated: January 26, 2023