A. A collateral mortgage becomes effective as to third parties, subject to the requirements of registry of the collateral mortgage, when a security interest is perfected in the obligation secured by the collateral mortgage in accordance with the provisions of Chapter 9 of the Louisiana Commercial Laws, R.S. 10:9-101 et seq.
B. A collateral mortgage takes its rank and priority from the time it becomes effective as to third parties. Once it becomes effective, as long as the effects of recordation continues in accordance with Articles 3328 through 3334 of the Civil Code, a collateral mortgage remains effective as to third parties (notwithstanding any intermediate period when the security interest in the secured obligation becomes unperfected) as long as the secured party or his agent or his successor retains possession of the collateral mortgage note or other written obligation, or the obligation secured by the mortgage otherwise remains enforceable according to its terms, by the secured party or his successor.
C. As long as the effects of registry of the collateral mortgage continue, in accordance with Articles 3328 through 3334 of the Civil Code, if there is a termination, remission, or release of possession of the written obligation, a collateral mortgage takes its rank and priority from the time a new security interest is perfected in the written obligation, regardless of whether the secured party is the original secured party, his successor, or a new or different secured party.
D. The provisions of this Section shall become effective on January 1, 1990.