(1) When property passes by intestate succession or the will is unclear and there is doubt about:
(a) Who is entitled to receive any part of the property, or
(b) The shares and amounts that any person is entitled to receive,
any interested person may petition the court to determine beneficiaries or their shares.
(2) Any personal representative who makes distribution or takes any other action pursuant to an order determining beneficiaries shall be fully protected.
(3) A separate civil action to determine beneficiaries may be brought when an estate has not been administered.