Chapter 4.90 of the Fullerton Municipal Code is repealed; provided, however, that said chapter shall remain applicable for the purposes of the administration of said chapter and the imposition of and the collection of tax with respect to the sales of, and the storage, use, or other consumption of tangible personal property prior to January 1, 1974, the making of refunds, effecting credits, the disposition of moneys collected, and for the commencement or continuance of any action or proceeding under said chapter. (Ord. 1931 § 2 (part), 1973).