1511.An institution’s medical staffing plan approved by the Minister under section 378 of the Act respecting health services and social services (chapter S-4.2) and section 46 of the Act to modify the organization and governance of the health and social services network, in particular by abolishing the regional agencies (chapter O-7.2), as they read on the day before the day of amalgamation, remains in force until such a plan is drawn up and approved for the institution in accordance with sections 234 and 235 of this Act.