(a) If the Arkansas Development Finance Authority or a county or municipality in the state and a lessee under a lease or a purchaser under a contract for sale enter into an agreement for payments in lieu of ad valorem taxes, each agreement shall provide, or under this subchapter shall be interpreted as providing, that all in-lieu-of-taxes payments shall be distributed to the local political subdivisions that would have received ad valorem tax payments on the industrial facilities if the interest involved had not been exempt from ad valorem taxes in the proportions that the millage levied by each affected local political subdivision bears to the millage levied by all affected political subdivisions, unless all such local political subdivisions, including without limitation the affected school district or districts, shall otherwise agree.
(b) This section does not affect the rights or obligations of any of the parties to an agreement under this subchapter that exists on the date of enactment of this subchapter providing for payments in lieu of ad valorem taxes.