unloadMovieNum,removes external swf but still active

So this is my beef, I use loadMovieNum(“flat/1st.swf”, 20); , then in frame 50, I added unloadMovieNum(20); . The external 1st.swf disappears, but where my buttons where in 1st.swf, are still active, even though you can’t see them.

So how do I completely remove an external swf, without being active, even though u can’t see it?

hope it makes sense, thanks