The provisions of Part 5 (commencing with Section 220) of Division 2 of the Probate Code, when applicable, govern the distribution of money payable under this system, including but not limited to retirement allowance accrued but not received prior to death and refund of member contributions. In applying Part 5 (commencing with Section 220) of Division 2 of the Probate Code with respect to benefits payable to a beneficiary, membership in this system shall be considered as having the same status as an insurance policy issued after December 31, 1984.