Minn. R. Civ. P. 27.02
If an appeal has been taken from a judgment or order, or before the taking of an appeal if the time therefor has not expired, the district court in which the judgment or order was rendered may allow the taking of the deposition of witnesses to perpetuate their testimony for use in the event of further proceedings in the district court. In such case, the party who desires to perpetuate the testimony may make a motion in the district court for leave to take the depositions, upon the same notice and service thereof as if the action was pending in the district court. The motion shall show the names, addresses, the substance of the testimony expected to be elicited from each person to be examined, and the reasons for perpetuating their testimony. If the court finds that the perpetuation of the testimony is proper to avoid a failure or delay of justice, it may make an order allowing the depositions to be taken and may make orders authorized by Rules 34 and 35, and thereupon the depositions may be taken and used in the same manner and under the same conditions as are prescribed in these rules for depositions taken in actions pending in the district court.
Minn. R. Civ. P. 27.02