Adobe air doesn't remove objects of previous scenes

hi,

I'm using adobe air for desktop instead of flash player because it have a database par. In my project it has several scenes that i make navigate through battens with gotoandPlay(),But when i play it with adobe AIR for desktop. it still keeps previous scenes objects. specially when i click on back button to go to the previous scene. the objects displayed in the last scene also display above the current scene objects. i had search it in entire internet but i didn't find a solution for it. please tell me how to fix it.