(a) When the Department vacates an order which suspended certain tariff matter in full or in part, such matter will not become effective until the termination of the suspension period unless the issuing agent or carrier amends the pertinent tariffs in the manner prescribed in this subpart (except as provided in paragraph (b) of this section).

(b) If the Department vacates its suspension order prior to the original published effective date of the tariff provisions whose suspension is vacated, such provisions will become effective on their published effective date.