No, I can't think of a way of doing this except by laboriously copying and pasting. It'd be a good idea for a python script though. This is an example of how Poser hasn't kept up on the animation front, it's so obvious that we'd need this sort of thing but the animator's tools haven't changed since Poser 3 and I don't suppose they will in Poser 5 either (if it exists)...