Traditionally, adoption could not proceed unless the parental rights of both parents were first terminated. However, this is no longer always the case. In some instances, birth parents and legal parents have entered into an open adoption agreement, also known as "cooperative postadoption agreements." Either or both birth parents and an intended adoptive parent may enter into a cooperative postadoption agreement regarding communication or contact between either or both birth parents and the adopted child. Such an agreement may be entered into if: