Supplementary occupational pension funds may be authorised, under the conditions defined in Article L. 324-1, to transfer all or part of their portfolio of contracts to insurance companies and their branches mentioned in 1° of Article L. 310-2 as well as to French branches of insurance companies mentioned in 4° of the same article, to mutual insurance companies or unions governed by Book II of the Mutual Code or to provident institutions, solely in the context of legal reorganisations of the groups to which these supplementary occupational retirement funds belong or in the case of legal reorganisations of the legal entities subscribing these contracts, as well as in the context of a recovery plan, a convergence plan or a short-term financing plan mentioned in article L. 385-8 and as part of protective measures taken pursuant to article L. 612-33 of the Monetary and Financial Code.