; and (B) register each program participant with the applicable registration agency by, except as otherwise required by the registration agency, filing a copy of the apprenticeship agreement with the registration agency and, as required under section 123(a)(4), sharing such a copy with the Administrator. (4) Transition process for previously approved programs With respect to an apprenticeship, pre-apprenticeship, or youth apprenticeship program that was registered under this Act as of the day before the date of enactment of the National Apprenticeship Act of 2023 , the applicable registration agency for such program shall take such steps as necessary to— (A) in the case of a program that meets the requirements of this Act, maintain the status of the sponsor of the program as of the date before such date of enactment as the sponsor of such program under this Act; and (B) in the case of a program that does not meet the requirements of this Act, provide technical assistance to the sponsor of such program to ensure that the sponsor is in compliance with this Act not later than 3 years after the date of enactment of the National Apprenticeship Act of 2023 . (c) Modifications or changes to youth apprenticeship, pre-Apprenticeship, or apprenticeship programs (1) Sponsor proposal Any sponsor that wishes to modify an apprenticeship, pre-apprenticeship, or youth apprenticeship program, including a modification to the method of the program for meeting the standards required under this Act, shall submit a proposal for the modification to the registration agency for the program for consideration in accordance with paragraph (2). (2) Registration agency requirements (A) In general With respect to a proposal for modification submitted to a registration agency under paragraph (1), the registration agency shall, not later than 60 days after receipt of the proposal— (i) approve the proposal under subparagraph (B) or disapprove the proposal under subparagraph (C)