I think this is an essential feature, and I wonder why it isn't supported right now. Flex can use scale-9 with directly imported bitmaps, why shouldn't it work with bitmaps imported from Flash CS3?
I have created the feature request here: https://bugs.adobe.com/jira/browse/SDK-15575 Please, vote! :) Thanks, João Saleiro PS: In the meanwhile I guess I have to create my bitmap skins on external files, and set the scale-9 grid by hand on CSS
