31.1.5R8.1. The information referred to in any of sections 31.1.5R1, 31.1.5R3 and 31.1.5R6 or paragraph 2 of section 31.1.5R4 must be sent in such a manner as to preserve its confidentiality. To that end, the addressee and the sender shall identify the persons who, in their organization, are authorized to send or receive such information.