You need to ask your lawyer.
However, if the mediation was just between the two of you ... And not ordered by the court, or filed with the court ... You probably still need to follow the court order.
I had a court order for the father to have visitations a year later we went to mediation and agreed and now have a mediation agreed order. Because we have the new order is the other court order void? Or do we go by both court orders?