Iowa Code § 249.10
Any lien or claim against the estate of a decedent existing on January 1, 1974, which lien was perfected or which claim was filed under the provisions of section 249.19, 249.20, or 249.21, Code 1973, and prior Codes, and which liens or claims have not been satisfied, are void. Any assignment of personal property which was made under the provisions of chapter 249, Code 1973, and prior Codes, is void. The director may in furtherance of this section release any lien or claim created or existing under that chapter. Each release made pursuant to this section shall be executed and acknowledged by the director or the director's authorized designee, and when recorded shall be conclusive in favor of any third person dealing with or concerning the property affected by the release in reliance upon such record.
Iowa Code § 249.10
2005 Acts, ch 179, §123