La. Stat. tit. 9 § 5384
Current with operative changes from the 2024 Third Special Legislative Session
An original vendor's privilege or first mortgage, or both, is not extinguished nor is its ranking subordinated to any other mortgage, lien, privilege, or encumbrance when the obligation it secures is assumed by a new obligor, notwithstanding the release of the original obligor.
La. R.S. § 9:5384