After casting the first 5 seasons RPDR Chanel Perillo is no longer working with Ru.
Chanel, Raja, Sharon Needles, Mathu Anderson
Chanel claims that she had better paying projects to work on which is true.
Other sources claim that Ru felt Chanel was too close to the drag queens in the scene & that her ability to select unique talent for the show might be hindered by her friendships with the queens.
PS- Either way we won't be seeing Vicky Vox on season 6.