Mont. Code Ann. § 70-21-303

Further, every conveyance and/or encumbrance of real property acknowledged or proved and certified and recorded as prescribed by law and which is executed by one who thereafter acquires an interest in the real property by a conveyance which said conveyance is constructive notice as aforesaid is, from the time such latter conveyance is filed with the county clerk for record, constructive notice of the contents of such earlier conveyance and/or encumbrance to subsequent takers, purchasers, mortgagees, or other encumbrancers or transferees.