A. Any action to set aside a document or instrument on the ground that the party executing the document or instrument under authority of a power of attorney was without authority to do so, or that the power of attorney was not valid, is prescribed by five years, beginning from the date on which the document or instrument is recorded in the conveyance records, or the mortgage records if appropriate. Nothing contained in this Section shall be construed to limit or prescribe any action or proceeding which may arise between a principal and the person acting under authority of a power of attorney.
B. The prescriptive period established by Subsection A of this Section shall be retroactive and shall apply to all such documents whether recorded prior to or after August 15, 2008; however, as to any documents recorded prior to August 15, 2008, as to which prescription has not already run and become final, the prescriptive period established by Subsection A of this Section shall become final and complete ten years from the date the document was recorded or August 15, 2013, whichever occurs first.