Upon the written request of a holder of a cotton class memorandum or certificate issued under this subpart, a new memorandum or certificate shall be issued, without the reclassification of the cotton, to take the place of the former memorandum or certificate for any cotton covered thereby, when necessary on account of the breaking or splitting of a lot or otherwise for the business convenience of such holder. In any case where a new memorandum or certificate is requested in accordance with this section the former memorandum or certificate shall be surrendered for cancellation, and such new memorandum or certificate shall bear a new number and the date of its issuance and the date of original classification and shall otherwise comply with this subpart.