Immediately upon the completion of mediation resulting in the settlement of all or part of a case, the parties shall notify the chambers of the presiding judicial officers. Within 7 days of the close of mediation, the mediator will file with the clerk a report which states that all or part of the case was settled (specifying which part of the case settled) or that it was not settled. If all or part of the case was settled, the parties shall, at the mediation, place in writing the terms of the settlement, and all participants shall sign the terms of the settlement, with the mediator retaining the original.