historical and traditional use. (6) Management of qualified land grant-merced Management of lands located within the patent boundary of a qualified land grant-merced shall not be affected during the negotiation process under paragraphs (3) or (4) or the appeal process under paragraph (5). (e) Amendment of management plan To reflect historical-Traditional use boundaries Not later than two years after the determination of the historical-traditional use boundaries of a qualified land grant-merced under this section, the Secretary concerned shall— (1) conduct a land survey of the historical-traditional use boundary of a land grant-merced