You know very, very, very little about being in a religious order, don't you?
Exactly what part of "Summorum Pontificum" do you and you're "religious orders" not understand?
We order that everything We have established with these Apostolic Letters issued as Motu Proprio be considered as "established and decreed", and to be observed from 14 September of this year, Feast of the Exaltation of the Cross, whatever there may be to the contrary.
From Rome, at St. Peter's, 7 July 2007, third year of Our Pontificate.
Pope Benedict XVI