N.M. Stat. § 35-12-6
Garnishment; unmatured debts.
Debts not yet due to the defendant may be garnished, but no execution shall be
awarded against the garnishee for such debts until they become due. The magistrate
may order the defendant to deliver the evidence of such indebtedness to the court. If the
defendant alleges an endorsement or delivery of the evidence before the court's order
came to his knowledge, the court may inquire into the consideration and good faith of
the transfer and, if the court determines that the endorsee or transferee holds by
fraudulent endorsement or delivery, it may order delivery of the evidence to the court.
When any evidence of indebtedness is delivered to the court under this section, the
court shall notify any endorsers of its nonpayment at maturity, and the garnishment
proceedings shall remain open until it becomes due.