Louisiana Code of Civil Procedure Tit. V, Art. 1571. Assignment by court rule

B. A party who appears in proper person before the court shall advise the court of his current address and any change of address during the pendency of the proceedings. The address and change of address shall be entered in the record of the proceedings. The failure of a party to provide such information does not affect the validity of any judgment rendered if notice of trial or other matters was sent to the party's last known address of record.