Iowa Code § 587.4

In all cases where decrees and orders of court have been obtained for the sale of real estate by a guardian prior to January 1, 1969, where the original notice shows that service of notice pertaining to the sale of such real estate was made on the minor or protected person outside of the state of Iowa, such services of notices are hereby legalized. All decrees so obtained as aforesaid are hereby legalized and held to have the same force and effect as though the service of such original notice had been made on the minor or protected person within the state of Iowa.