Ifc to rfa conversion is typically searched by users that are looking for a way to convert IFC format (Industry Foundation Classes) directly to RFA Revit family format, or just if this kind of import is even doable.
Revit allows users to import IFC content as object and then copy the object to existing family project (.rfa). It is unlikely any other software can be used for this. If you have issues or face some problems (like being unable to save .rfa file), it might be best to reach out to Autodesk support or online community for help.
Updated: October 20, 2023