Mo. Rev. Stat. § 473.682: Priority of personal representative appointed by court of decedent's domicile — exceptions.

A personal representative appointed by a court of the decedent's domicile has priority over all other persons for appointment as local personal representative, except where the decedent's will nominates different persons to be personal representative in this state and in the state of domicile. The domiciliary personal representative may nominate another, who shall have the same priority as the domiciliary personal representative.