A party may amend an itemised costs account or a Notice Disputing Itemised Costs Account by filing the amended document with the amendments clearly marked:
(a) at least 14 days before the date fixed for the assessment hearing; or
(b) after that time with the consent of the other party; or
Note: The only items that may be raised at an assessment hearing are those items included in the Notice Disputing Itemised Costs Account (see subrule 12.45(2)).