When a tariff cancelling a previous tariff omits rates or rules which were contained in such previous tariff, the new tariff shall contain, under the subcaption described in § 23.22 (relating to list of changes made by tariff), a brief statement of all such omissions, including reference to the page or pages in the previous tariff upon which such rates or rules were shown, and if such omissions effect increases or decreases in charges, that fact shall be stated.
52 Pa. Code § 23.23