Any proposed transfer in whole or in part of any right, title or interest in a right-of-way, or permit incident to a right-of-way acquired under any law, except the Act of March 3, 1891 (26 Stat. 1101; 43 U.S.C. 946-949), must be filed in accordance with §14.20 for approval, must be accompanied by the same showing of qualifications of the transferee as is required of the applicant, and must be supported by a stipulation that the assignee agrees to comply with and to be bound by the terms and conditions of the right-of-way. No transfer will be recognized unless and until it is first approved in writing by the authorized officer.