Can you add to a stack/swap a photo out of a stack after you've already hit "OK?"

[hopeprintER]

I am creating a simple gif style animation by using the Scripts>Load Files into Stack function.

After I browse and upload all my images, then hit ok, and create a frame animation from the layers, is it possible to add a new image into the stack after this? Or am I stuck with the same stack and if I want to make changes I have to begin the process all over again?

[c.pfaffenbichler]

You can add whatever Layers you want (within Photoshop’s limitations), but if you don’t want them to appear in all Frames make sure to uncheck »New Layers visible in all Frames« first. 

Then you can add the new frames manually or create the frame animation completely anew.