This does save the relative position and timing of the images, but it does NOT save animation settings. All animations default to "Draw" regardless of their original setting, making this solution only marginally useful. This is also true of "Copy & Paste" within a single document.
I am having a different issue when copying elements from one scribe to another. The copy and paste works, but the copied elements do not play at the end for the timeline. It is as if the scribe I pasted the elements into does not see them. They are on the canvas and they do show up in the correct position on the timeline. Any ideas on how to get the copied elements to play?