Section 647.2 - Proceedings1. The petition, notice, and decree in said action to restore any lost or destroyed records, and all proceedings in said suit, so far as the same relate to unknown defendants, shall conform to the statutes of this state applicable to actions against unknown defendants and unknown claimants; and all known defendants shall be served with notice in the time and manner now provided by law; and whenever said action is brought by the owner of said real estate, all clouds upon said title and defects therein and all adverse claims thereto may be adjudicated in the same suit and title quieted therein.2. The provisions of rule of civil procedure 1.1011 shall be applicable to defendants served with original notice in such action by publication.S13, §4227-b; C24, 27, 31, 35, 39, §12259; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §647.2Unknown defendants, §617.7