Doug, if you're reading this thread, could you please clarify the following paragraph of the article FauxPas linked:
QUOTE
The Kirov's Lilac Fairy variation follows neither notation, although claims have been made that their Lilac Fairy dances Marie Petipa's version. While the floor plan of the Kirov's variation follows that of Marie's, the steps differ from the notation. For example, the Kirov's Lilac begins with a diagonal of large jetés, traveling from upstage left to downstage right. The notation, however, offers the following first combination: after a starting pose with left foot tendu front, the ballerina steps forward on the left foot and piqués on the right foot in a low arabesque. Stepping through to plié on the left foot, she performs a pas de chat, leading with the right foot, to finish en face in fifth position, left foot front. She now steps to her right side, piqués on the right foot and brings her left foot to coupé front, while making a half turn to the left to face the upstage left corner. She pliés on her right foot, as her left leg moves to a low à la seconde, presumably while finishing the turn. (The lack of a left turn sign in the notation - indicated by a minus sign in parenthesis above the feet and legs stave - makes this turn slightly ambiguous.) She steps to plié-coupé on the left foot and is ready to begin again. The entire combination is performed three times. No jeté is indicated. The Kirov's final combination of penchée arabesques also is not given in the notation.
I assume when you mention the "Kirov's version" in this paragraph you are referring to the Sergeyev production? If so, I see a few differences between what you describe and what I've always seen the Kirov do, the most noticeable ones being that the Kirov's Lilac (as far as I've seen) has no jetés in her variation and she begins in the upstage right corner, not upstage left.
Also, the combination you describe as being notated for Marie Petipa I have trouble visualizing starting in the upstage right corner, but it makes sense when starting upstage left.
Thank you for all the work I know you've put into this, and thanks to Marc Haegeman for making it available online.