In all instances prior to January 1, 1964, where the clerk of the district court of any county failed to publish notice of the time fixed for hearing of the probate of any will filed in such county as required by section 11865 of the Code [1924 through 1939], and section 633.20, Codes 1946 through 1962, but did publish a notice of the time fixed for such hearing signed by the clerk and addressed to whom it may concern in a daily or weekly newspaper printed in the county where the will was filed, such notice of time fixed for the hearing of the probate of such will is hereby legalized and shall have the same force and effect as though the same had been published in strict conformity with the requirements of said section.
Iowa Code § 590.2