This Chapter shall not terminate the preexisting Commission or appointments thereto, or any certificates, permits, orders, rules or regulations issued by it or any other action taken by it, unless and until revoked by it, nor affect in any manner the existing franchises, territories, tariffs, rates, contracts, service regulations and other obligations and rights of public utilities, unless and until altered or modified by or in accordance with the provisions of this Chapter. (1963, c. 1165, s. 1.)