Rule 37.03 - Failure to Supplement or Amend Responses or Failure to Admit(1) A party who without substantial justification fails to supplement or amend responses to discovery requests as required by Rule 26.05 is not permitted, unless such failure is harmless, to use as evidence at trial, at a hearing, or on a motion any witness or information not so disclosed. In addition to or in lieu of this sanction, the court on motion may impose other appropriate sanctions. In addition to requiring payment of reasonable expenses (including attorney fees) caused by the failure, these sanctions may include any of the actions authorized under Rule 37.02(A), (B), and (C) and may include informing the jury of the failure to supplement or amend.(2) If a party fails to admit the genuineness of any document or the truth of any matter as requested under Rule 36, and if the party requesting the admissions thereafter proves the genuineness of the document or the truth of the matter, the requesting party may apply to the court for an order requiring the other party to pay the requesting party the reasonable expenses incurred in making that proof, including reasonable attorney's fees. The court shall make the order unless it finds that (1) the request was held objectionable pursuant to Rule 36.01, or (2) the admission sought was of no substantial importance, or (3) the party failing to admit had reasonable ground to believe that he might prevail on the matter, or (4) there was other good reason for the failure to admit. As amended July 1, 1979. Amended by order filed December 29, 2005, effective July 1, 2006. Amended by order filed December 14, 2009, effective July 1, 2010.