(1) The moving party shall give notice, as described by 72-1-301, of the application for informal probate: (a) to any person demanding it pursuant to 72-3-106; and (b) to any personal representative of the decedent whose appointment has not been terminated. (2) No other notice of informal probate is required.
Informal Probate -- Notice Requirements
Mont. Code Ann. § 72-3-211, under Informal Probate and Appointment Proceedings.
Mont. Code Ann. § 72-3-211