Alizée and Grégoire have moved from the role of contestant to the role of Featured Pair. Keep in mind that one of the target groups of this show is Housewives under 50. To them Aiizée is a bit of a fantasy - a love story unfolding. They probably look forward to seeing how A&G are doing - if the love story with the great dancer continues.
I think Chris M. realizes this, and has finally recognized their long term value to the tour. This may explain their increased presence in promoting the tour.