At any time after an assignment has been made, the assignor, the creditors, and the assignee of such assignor may agree in writing that all proceedings to be had before the court under the provisions of this article, may be waived. Upon the filing of such agreement with the clerk of the proper court, the court shall cease to have any further jurisdiction over such assignment and the proceedings thereunder, and the assignee shallno longer be held accountable to the court. The creditors and the assignee, with the consent of the assignor, in writing, may make such disposition of the assigned estate and arrangements in reference thereto as to them shall seem proper in the premises.