Louisiana Revised Statutes Tit. 9, § 321. Retroactivity of judgment concerning spousal support

A. Except for good cause shown, a judgment awarding, modifying, or revoking an interim spousal support allowance shall be retroactive to the date of judicial demand.

C. Except for good cause shown, a judgment modifying or revoking a final spousal support judgment shall be retroactive to the date of judicial demand.

D. Spousal support of any kind, except that paid pursuant to an interim allowance award, provided by the debtor from the date of judicial demand to the date the support judgment is rendered, to or on behalf of the spouse for whom support is ordered, shall be credited to the debtor against the amount of the judgment.

E. In the event that the court finds good cause for not making the award retroactive to the date of judicial demand, the court may fix the date on which the award shall commence.

F. A judgment extinguishing an obligation of spousal support owed to a person who has cohabited with another person of either sex in the manner of married persons shall be retroactive to the date of judicial demand.