Section 49-4-21 - Rights of lessees and purchasersA. A person who is not an heir and who purchases or leases property within the limits of the land grant-merced shall only have a right to the lands acquired through the purchase or lease but not to any common lands within the land grant-merced. B. The provisions of Chapter 49, Article 4 NMSA 1978 shall not diminish, extinguish or otherwise impair any private property interest located within the boundaries of the land grant-merced or be construed to grant the board of trustees regulatory authority over such property interests or lands other than the common lands held by the land grant-merced. As used in this subsection, "property interest" includes valid easements and rights of access, but does not include use rights to the common lands of the land grant-merced. Laws 2007, ch. 145, § 20.