If a petition filed under this chapter is filed with a petition for the probate of the decedent’s will or for administration of the estate of the decedent and the court determines not to make an order under Section 6609, the court shall act on the petition for probate of the decedent’s will or for administration of the estate of the decedent in the same manner as if no petition had been filed under this chapter, and the estate shall then be administered in the same manner as if no petition had been filed under this chapter.