Mont. Code Ann. § 70-1-703

Unless a contrary intention appears, a devise, as defined in 72-1-103, or an inter vivos conveyance of a property interest to the estate of a named or otherwise designated person passes the interest as if the interest had been owned by that person. The interest may pass to the heirs of that person, may be used to satisfy devises made in that person's will, or may be used to satisfy claims for debts or taxes.