If the FLA project file is lost or damaged, what a frustrating thing for the author. And such a thing should have been met by someone sometime. There are also many tools help us to retrieve it from SWF. What’s the result? Some tools only can get back resources not the file I can edit. The only one that can generate the FLA file almost similar to the original is Sothink SWF Decompiler.
Sothink SWF Decompiler is more stable and also provides the Mac version. It is able to decompile SWF to FLA projects at a very high success rate. I’ve tried as follows: