A person involved in a transaction or activity that the commission concludes in an advisory opinion to be a conversion of a contribution to personal use in violation of Section 253.035, Election Code, is not civilly liable to the state if:
(1) before receiving the opinion, the person reasonably believed the transaction or activity did not constitute a conversion, taking into account prior opinions and rules of the commission; and
(2) on or before the 30th day after the date the opinion is published, the person:
(A) returns to the political fund from which it was removed an amount equal to the amount converted; and
(B) notifies the commission by certified mail that the person has returned the converted contribution as required by this section.