Any trick to import/export from SWISH not Adobe Flash?

I’ve been successful once or twice with importing an animation file I made in SwishMax 2 (the other flash program) but my more complex animations break down into many different drawings, in TBS4.5. They don’t play at that point. Are only .SWF files made in Adobe Flash compatible with TBS? Or is there a special format? Will the TBSi work with SwishMax 2? Anyone experiment with these two?