Sarah Bullen’s edited version from her orchestral excerpt book doesn’t have the change that you’re talking about. Do you have this book? That will probably answer your question well.
I don’t have this music in front of me, but I love using enharmonics to make some of the chord structures less awkward. For example, at the end, after the mounting C flat major inversions, I use a B natural in the three chords that follow them, thus making them really easy to grab. Also, in the exposed middle section, there are some opportunities for enharmonics that you can either play or use as “safety” notes.