I think having made the animation aeron wants to export each frame in a numbered sequence, each frame as a seperate alpha PNG, quite normal in animation but xara is not really that kind of animation program

so again, you can't do that directly from the frames - but presumably you have the edited images you placed in each frame so you could export these in one go from a non-animation document by publishing [I think - acorn will know] - but you'd have to name each one