There are 2 ways:
You can copy the bootloader:
var newLoader:Loader = new Loader(); newLoader.loadBytes(oldLoader.contentLoaderInfo.bytes);
or you can get the MovieClip class and create a new instance. But for this you will have to compile the external SWF with some document class (you do not need to create the .as file, just enter some namespace for this SWF there)
var movieType:Class = myMovieClip.constructor; var copyMovie:MovieClip = new movieType();
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