(a) If the parties have entered into a separation agreement which the court finds to be valid, just and equitable, the agreement shall be incorporated in the decree. A separation agreement may include provisions relating to a parenting plan. The provisions of the agreement on all matters settled by it shall be confirmed in the decree except that any provisions relating to the legal custody, residency, visitation parenting time, support or education of the minor children shall be subject to the control of the court in accordance with all other provisions of this article.(b) Matters settled by an agreement incorporated in the decree, other than matters pertaining to the legal custody, residency, visitation, parenting time, support or education of the minor children, shall not be subject to subsequent modification by the court except:
(1) As prescribed by the agreement; or (2) as subsequently consented to by the parties.
