Sec. 4.7. (a) A county auditor and county treasurer may enter into a mutual agreement for the county auditor to perform the following duties instead of the purchaser:
(1) Notification and title search under section 4.5 of this chapter.
(2) Notification and petition to the court for the tax deed under section 4.6 of this chapter.
(b) If a county auditor and county treasurer enter into an agreement under this section, notice shall be given under IC 6-1.1-24-2(b)(12).