You can find them by simply clicking on the History tab.  Be aware though, due to the difference in size between the GIF and JPEG frames, any time you come across an animated frame it will be smaller, this was something I had to do to keep the sizes of the animated frames down.  It worked well in my old formating, but not as much in my new wider format.  When I restart smaller webcomic stories you will likely see a change in how I present the animated parts.