DR Jose, yes, it's too bad that officially, Ms. D'Amboise goes back under cover after the Saturday evening performance.
As far as tweaks (in CCBB), I didn't notice many, just that the show seemed scaled back from London although it's hard for me to tell because it's been almost two years since I saw it (December of 2003). Even though it's a large show for Broadway, it seemed bigger in all respects at the Palladium, bigger cast, more dogs, bigger sound, bigger set, bigger (in a good way) performances, etc.
And no, Mr. Kudisch did not appear naked in CCBB.