Some notes if you want to import a .fla file into the Animation Editor

1. Flash version has to be CS 6.0.
2. You need to choose the ActionScript3.0 when you create the flash project.
3. The flash should have only 2 elements, one is “Symbol”, the other is “graphics”
4. All graphics should be bitmaps, you cannot import a .fla file with vectors, make sure to translate your vectors to bitmaps before exporting.
5. Each bone corresponds one symbol, you can choose both movie clip and graphic types when you create a symbol.
6. Each symbol corresponds one map, you cannot put more maps into one symbol
7. Each project corresponds one scene, and the scene can only include one sprite (or figure)
8. A nested symbol cannot be regard as a bone.

Nice!

Thanks.