My partners ex wife is disputing their obligation to pay 1 term of private school fees for their child. The court stamped court orders state he responsible for 3 terms and she is responsible for 1 term. She is arguing that her copy of the orders contain a hand written amendment that she is only responsible for primary school fees not high school fees which our child started this year. The handwritten addition about primary school doesn't appear in his copy. Is it possible that court orders can be made on copies that differ from each other in error?