A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Normally this should work as you expect; there's probably something more to it that we'd only be able to figure out by looking at the actual slides.
However, if a particular animation doesn't copy, you can use the Animation Painter tool to "copy" the animation from the original shape and apply it to any other shape.
It's on the Animations toolbar.