A.R.S. § 14-5306

Except pursuant to section 14-5317, the authority and responsibility of a guardian for an incapacitated person terminates on the death of the guardian or ward, a determination of incapacity of the guardian, or substitution or resignation as provided in section 14-5307. Testamentary appointment under an informally probated will terminates if the will is later denied probate in a formal proceeding. Termination does not affect the guardian's liability for prior acts or the guardian's obligation to account for funds and assets of the guardian's ward.