AS3 External asset loading

Hi I was wondering if there was any way to import movieclips from an external swf file and display them using on screen using different functions than the function used to load the files in the first place. im not sure if im explaining this right but not sure if i can do it any other way besides creating multiple action script and movieclip files because the button that trigger the movie clips to come to the screen are in another action script file and use dispatch events