So normally when you do an Edit in PS from Flash, any changes you make to the asset in PS will be reflected in Flash, once you tab back. Now can you provide my with a little more information so I can help you to see what is going on?
Do you start with a Save/Unsaved document?
Do you import an image (png, jpeg, gif) or a psd file?
And if you work with a already saved document, do you save it as Compressed CS5 or Uncompressed XFL document (in Flash)?
Let me know and we'll go from there.
Hmm you know what this time all I did was click the red dot to close it PS, Save and I saw the changes...
Looks like I forgot to merge layers.