Mont. Code § 8
Unless ordered otherwise, in all matters where the court must enter findings of fact and conclusions of law pursuant to M. R. Civ. P. 52, all parties shall file with the court, and serve upon all opposing parties, at least seven days prior to the scheduled trial or hearing, proposed findings of fact and conclusions of law. Failure to file proposed findings of fact and conclusions of law in a timely matter shall be cause for appropriate sanction including removal of the case from the trial calendar, dismissal or granting of a judgment, precluding the offending party from presentation of evidence or objecting to evidence submitted by the other party, or such other action as the court deems appropriate. Post-trial amended and supplemental findings of fact and conclusions of law may be submitted in appropriate circumstances upon order of the court.
§ 8, MCA