Why wont Adobe After Effects export movie clips within a .swf file?

solo

New member
I'll try to explain as clear as possible.
I've made an animated video with "Adobe Flash CS5", within this video there are several animations that i have looping as "Movie Clips". The export from Flash went fine, however when i bring the .swf into "Adobe After Effects CS5" to do special effects editing, the movie clips within the .swf file no longer play after exporting from After Effects.

Can anyone shed some light onto my predicament?
Thanks.
V.
 
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