A. Any alienation, lease, or encumbrance of immovable property made by a successor prior to the date that Civil Code Article 938, as amended and reenacted by House Bill No. 66 of this 2001 Regular Session of the Legislature [Acts 2001, No. 556, eff. June 22, 2001], becomes effective, that would be valid under the provisions of Civil Code Article 938, is valid.
B. An action to annul an alienation, lease, or encumbrance of immovable property owned by a decedent at his death made by a successor prior to the appointment of a succession representative must be brought within a peremptive period of one year from the effective date of this Section.