La. Civ. Code art. 1887
Current with changes from the 2024 legislative session effective on or before 7/1/2024, from Acts 2,3, 6-535, and 580-647
If the new obligor has assumed the obligation and acquired the thing given as security, the discharge of any prior obligor by the obligee does not affect the security or its rank.
La. C.C. § 1887