A reference in any statute of this state or in a written instrument, including a will or trust, to a provision of former Sections 202 to 206, inclusive, of the Probate Code (as repealed by Chapter 527 of the Statutes of 1984) or former Sections 649.1 to 649.5, inclusive, or Sections 650 to 658, inclusive, of the Probate Code (as repealed by Chapter 783 of the Statutes of 1986) shall be deemed to be a reference to the comparable provision of this part.