Miss. Code § 27-55-65
This article shall not release or relinquish any liability or penalty incurred or right accrued under the laws of this state as they existed before the January 1, 1970, and such laws shall be considered as remaining in force for the purpose of instituting or sustaining any proper action or prosecution for the enforcement of any such liability, penalty or right. Such laws shall govern the reporting and payment of taxes on gasoline received, sold, distributed or used by bonded distributors of gasoline or other persons before January 1, 1970. Any and all matters, orders, hearings, and proceedings pending before the comptroller or before any court under provisions of such prior laws shall continue with the same effect as though such prior laws were not amended or repealed.
Miss. Code § 27-55-65