This was discussed (a little) in the interview with Yuri Burlaka and Vasily Medvedev during the intermission of the broadcast. Mr Medvedev said that in the grand pas with Fleur de Lys, he used the floor patterns of Petipa, but changed the steps. And he added a male corps to show the world what they could do (I don't recall what he exactly said, but this is the essention of what he said).
This was the example he used, I wonder what he has changed in other scenes..
I think Burlaka also said that all of Perrot's mime was shown in the production.