157. The directives, policies and other decisions made regarding Infrastructure Québec or the Société immobilière du Québec by the Cabinet, the Conseil du trésor or the Chair of the Conseil du trésor under the powers and prerogatives devolved to them continue to have effect with regard to the Société until their object is attained or until they are repealed, replaced or amended under this Act; those directives, policies and decisions are deemed to have been made by the competent authority under this Act.