Mont. Code Ann. § 72-15-212

At the final settlement of any estate, if there be no heirs or other claimants thereof, the district judge shall make an order directing the administrator to sell all property belonging to the estate and pay the proceeds to the county treasurer, who shall credit the same and all other moneys belonging to said estate to the escheated estates fund, and the county treasurer shall forthwith remit all of said money to the department of revenue with a statement as to the estates to which the money belongs, which remittance shall be treated as provided in chapter 14, as amended.