Iowa R. Civ. P. 1.1015. — Titles and liens protected

1.1015(1) The title of a good faith purchaser to property sold under the original judgment shall not be affected or impaired by any judgment, order or proceeding under rules 1.1011 through 1.1013.

1.1015(2) If the original judgment is merely modified pursuant to any of said rules, all liens or securities obtained under it shall be preserved in the modified judgment.