Nikki's final show at OUAM was Monday Nov. 25th. I don't think Sutton slighted her. Sutton most likely just mentioned the people that performed and were on stage for the final show.
Ana was great when I saw her too. Everything I read online made her sound unsuccessful in the part, but she got plenty of laughs throughout. Was pleasant surprised!
Did anybody ask the theater employees about the cast recording? I've had some luck in the past getting info that way. I'm still cautiously optimistic that something will be announced after the LA run. It seems strange, as someone said, that they would not want to capture this updated version.