attachMovie and unattaching

I have a simple movie with two scenes. In scene one I have a button which when clicked attaches a movie in the form of a simple info box which can be clicked closed using a button on it with ‘unloadMovie’ - works fine I can click the box open and closed at will. I attach this movie into level 2 of Scene 1.

However, when I click another button in scene 1 which takes me to scene 2, the attached movie, if still visible, from scene 1 remains visible. If I add the script unloadMovie…to the button which takes me to scene 2, scene 2 is now completely blank. What to do?