Versions of Montana Code 19-20-1008. Changes to beneficiary designations -- limitations on changing spouse beneficiary interest on LawServer 2023 Montana Code 19-20-1008. Changes to beneficiary designations — limitations on changing spouse beneficiary interest 2022 Montana Code 19-20-1008. Changes to beneficiary designations — limitations on changing spouse beneficiary interest 2021 Montana Code 19-20-1008. Changes to beneficiary designations — limitations on changing spouse beneficiary interest 2019 Montana Code 19-20-1008. Changes to beneficiary designations — limitations on changing spouse beneficiary interest