Miss. Code Ann. § 31-17-53

The counties, municipalities, and other local authorities possessing power to refund bonds under any statute of Mississippi may, for retiring and paying such refunding bonds and interest, pledge and make applicable to and available therefor any and all securities, properties, and taxes that were pledged, applicable to, or available for the paying of the original issue and interest thereon, so refunded, but only to the same extent, amount, and purposes.