N.M. Stat. § 45-3-409
Formal testacy proceedings; order; foreign will.
A. After the time required for any notice has expired, upon proof of notice, and after
any hearing that may be necessary, if the district court finds that the testator is dead,
venue is proper and that the proceeding was commenced within the limitation
prescribed by Section 3-108 [45-3-108 NMSA 1978], it shall determine the decedent's
domicile at death, his heirs and his state of testacy. Any will found to be valid and
unrevoked shall be formally probated. Termination of any previous informal appointment
of a personal representative, which may be appropriate in view of the relief requested
and findings, is governed by Section 3-612 [45-3-612 NMSA 1978]. The petition shall be
dismissed or appropriate amendment allowed if the court is not satisfied that the alleged
decedent is dead.
B. A will from a foreign jurisdiction which does not provide for probate of a will after
death, may be proved for probate in New Mexico by a duly authenticated certificate of
its legal custodian that the copy introduced is a true copy and that the will has become
operative under the law of the foreign jurisdiction.