Cal. Civ. Proc. Code § 995.020
(b) The provisions of this chapter apply to a bond or undertaking given at any of the following times:
(2) Before January 1, 1983, to the extent another surety is substituted for the original surety on or after January 1, 1983, or to the extent the principal gives a new, additional, or supplemental bond or undertaking on or after January 1, 1983.
Except to the extent provided in this section, the law governing a bond or undertaking given before January 1, 1983, is the law applicable to the bond or undertaking immediately before January 1, 1983, pursuant to Section 414 of Chapter 517 of the Statutes of 1982.