La. Corporations and Associations § 12:1310.1
Whenever any immovable property is acquired by one or more persons acting in any capacity for and in the name of any limited liability company which has not been issued a certificate of organization as provided by law, and the limited liability company is subsequently issued a certificate of organization in accordance with the provisions of R.S. 12:1304, the limited liability company's existence shall be retroactive to the date of acquisition of an interest in such immovable property, but such retroactive effect shall be without prejudice to rights validly acquired by third persons in the interim between the date of acquisition and the date that the limited liability company was issued the certificate of organization.
La. Corporations and Associations § 12:1310.1