When the spouses have declared that they are married under the regime of participation aux acquêts, each of them retains the administration, enjoyment and free disposal of his or her personal property, without distinguishing between that which belonged to him or her on the day of the marriage or has since come to him or her by succession or bequest and that which he or she acquired for valuable consideration during the marriage. For the duration of the marriage, this regime operates as if the spouses were married under the regime of separation as to property. When the regime is dissolved, each of the spouses is entitled to share equally in the value of the net acquests established in the other’s assets, and measured by the double valuation of the original assets and the final assets. The right to share in the acquests is non-transferable until the matrimonial property regime is dissolved. If dissolution occurs by the death of one spouse, his or her heirs have the same rights to the net acquests made by the other as their author.