Montana Title 46. Criminal Procedure § 46-11-316. Recorded proceedings

(1) The grand jury shall either appoint a stenographer to take in shorthand the testimony of witnesses or the testimony must be taken by a recording device, but the record so made must include the testimony of all witnesses on that particular investigation.

(2) The stenographic reporter or operator of a recording device shall, within 30 days after an indictment has been found, certify and file with the clerk of the district court the shorthand notes or the recordings made and an original transcript of the notes or recordings.

(3) An unintentional failure of any recording to reproduce all or any portion of a proceeding may not affect the validity of the prosecution.