1. Except as otherwise provided in subsection 2, the final settlement of an estate does not prevent:
(a) The reopening of the estate for the purpose of administering other property which has been discovered or for correcting errors made in the description of the property administered.
(b) The subsequent issuance of letters if it becomes necessary or proper for any cause that letters should again be issued.
2. In the absence of fraud, an estate must not be reopened based upon the discovery of:
(a) A will, if the estate was administered as if the decedent had died intestate; or
(b) A will dated later than the will that was probated.