The insurance undertaking or the supplementary occupational pension fund may enter into reinsurance or risk transfer treaties relating to commitments contracted under a contract or commitments mentioned in Article R. 342-1, provided that these transactions relate exclusively to all or part of the difference between the amount of benefits actually paid under this contract or these commitments and that of the benefits corresponding to the mathematical provisions within the meaning of Article R. 343-3 before cession and that all these transactions relate to a total commitment of less than 10% of these mathematical provisions.