Interesting find! Padme never returns to Naboo alive in in Episode III, so what could this scene be? Was Padme’s death originally going to be a hoax to help protect Luke and Leia? Maybe someone should ask Natalie Portman about it.
The original ending of ROTS was shot on location during production of Episode II. It was replaced by a green screen shoot during Episode III proper.
http://starwarz.com/tbone/special-deliveries/#more-1798
