1. In the manner required by this chapter for the sale of like property, a guardian may sell:
(a) The equity of the estate in any real property that is subject to a mortgage or lien; and
(b) The property that is subject to the mortgage or lien.
2. If a claim has been filed upon the debt secured by the mortgage or lien, the court shall not confirm the sale unless the holder of the claim files a signed and acknowledged document which releases the estate from all liability upon the claim.