Note sure what is happening here. According to the Supported Formats notations, this is all that is said about SWF:
SWF files can be imported with an alpha channel. Audio is not retained. Interactive content and scripted animation are not retained. Animation defined by keyframes in the main, top-level movie is retained.
Can you tell us more about your SWF file?
I got it from a screen recording software called Jing. I'm trying to use it with other video to create a training video.
Other than the name, Jing, I know nothing about that program/service.
Sorry, but good luck, and maybe others can help you there.
>screen recording software
I have also never seen Jing mentioned before... but I do have some saved links for other programs that may help... or may not, since they are not Jing
Techsmith codec http://forums.adobe.com/message/3692768
BB Flashback http://forums.adobe.com/thread/1074014