The provisions of this act¹ shall not operate as a limitation upon any benefit conferred upon an enterprise prior to July 1, 1999. An enterprise which has previously qualified for a benefit or incentive pursuant to Section 690.1 et seq. of Title 62 of the Oklahoma Statutes prior to July 1, 1999, or which has expended money or undertaken an obligation or made a location decision in reliance upon the conditions prescribed by Section 690.1 et seq. of Title 62 of the Oklahoma Statutes or other provisions of law related to benefits available based upon location of business activity within an enterprise zone shall continue to be entitled to all such benefits or incentives on and after July 1, 1999.