Loading Random Movies

After looking at the Loading Random Movies tutorial (http://www.kirupa.com/developer/actionscript/loading_random_movie2.htm) I decided to try it out for myself. The movies (‘random1.swf’, ‘random2.swf’, ‘random3.swf’ and last but not least ‘random4.swf’) are loaded into the ‘main.swf’ movie as they should be. The only problem is that the random movies involve duplicating movie clips and when the random movie is loaded into the main movie, it no longer duplicates the movie clips. Any help with this would be appreciated.