Article L2113-7 of the French General Code of Local Authorities
I. – Until the next renewal following the creation of the new commune, the municipal council is composed: 1° Of all the current members of the municipal councils of the former communes, if the municipal councils of the communes concerned so decide by concordant deliberations taken before the creation of the new commune; 2° Failing this, of the mayors, deputy mayors, as well as municipal councillors of the former communes,…