Mont. Code Ann. § 72-12-403

If the court grants the petition for delivery of the original will to a qualified handwriting expert residing and having a place of business outside the county or state, the clerk of court shall make at least two photocopies of the original will, which photocopies must remain in the custody of the clerk of court. The clerk shall mail the original will by certified mail, return receipt requested, to the handwriting expert specified in the order and shall give notice of the mailing by mailing copies of the order to each of the parties to the proceeding and to the handwriting expert.