To perform round-trip editing of images between Flash Catalyst and Photoshop, download and install a set of extensions. The extensions include the FXG plug-in and the Simplify Layers For FXG script.
Tip: Adding layer effects, masks, shape layers, and adjustment layers in Photoshop requires that you run the Simplify Layers for FXG script before returning to Flash Catalyst. There is no harm in running the script. A good practice is to always run the script before returning to Flash Catalyst.