Where approval of the court in which the guardianship or conservatorship proceeding is pending is required under this article, the guardian or conservator shall file a petition with the court showing the advantage of the compromise, settlement, extension, renewal, or modification to the ward or conservatee and the estate. Notice of the hearing on the petition shall be given for the period and in the manner provided in Chapter 3 (commencing with Section 1460) of Part 1.