UIScrollbar disappears when swf is loaded into main swf

I have a problem with the UIScroll bar component and I’m wondering if anyone knows why this is happening. I have a swf file (an “about us page”) that has a text field with a scrollbar. when I publish the about us swf everything works fine however when I load that swf into my main movie the swf loads and all other buttons etc work but the scrollbar is gone.

I’ve tried importing “import fl.controls.UIScrollBar;” into the code of the main swf but that did nothing.

Anyone know what might be going on?