In "HTML and images" export mode I can export HTML slice which contains flash animation. But this flash animation should be overlapping some images and be on top of them. It looks like it is not possible to achieve in this mode, because the images just get truncated and placed below the flash animation.
In "CSS and images" mode the flash animation is not exported at all.
Is it possible to do at all in Fireworks? Export page which contains flash content overlapping images? Maybe there is a trick..
The trick is to do it in Dreamweaver. :-) Fireworks is not the place to work on complex positioning of assets, including overlapping elements.