Mont. Code § 19-20-722
As required by section 401(a)(31) of the Internal Revenue Code, the retirement system shall advise an eligible recipient of any payment from the retirement system that constitutes an eligible rollover distribution of the recipient's rights to roll over the distribution and shall allow the recipient to elect a direct rollover of the eligible distribution to an eligible plan. The recipient is responsible for correctly designating a receiving plan that is eligible and willing to receive a direct rollover distribution of tax-deferred or after-tax contributions or both from the retirement system and to ensure timely submission of required supporting documentation from the receiving plan. The retirement system will determine, in its sole discretion, whether to make a direct rollover distribution to a receiving plan through an electronic transfer or by paper warrant.
§ 19-20-722, MCA