Payment of debts and charges of the estate shall be made in the order provided in section 633.425 , without preference of any claim over another of the same class. If the assets of the estate are insufficient to pay in full all of the claims of a class, then such claims shall be paid on a pro rata basis, without preference between claims then due and those of the same class not due. [C51, §1378, 1379; R60, §2410, 2411; C73, §2426, 2427; C97, §3353; C24, 27, 31, 35, 39, § 11976; C46, 50, 54, 58, 62, §635.71; C66, 71, 73, 75, 77, 79, 81, §633.426 ] 2008 Acts, ch 1032, §86 Referred to in §633A.3104