619.30. The regional systems for the admission of beneficiaries established under section 18.1 of the Act respecting health services and social services, and the criteria for the admission of beneficiaries approved in accordance with that section shall remain in force in the territories and with regard to the institutions for which they were established or approved until replaced by mechanisms of access to services created in accordance with section 355 or by criteria of access to services approved in accordance with section 356.