California Code, Probate Code - PROB § 2016

(a) Upon registration of a conservatorship order from another state and the filing by the conservator of an acknowledgment of receipt of the written information required by Section 2015, the conservator may, while the conservatee resides out of this state, exercise in any county of this state all powers authorized in the order of appointment except as prohibited under the laws of this state, including maintaining actions and proceedings in this state and, if the conservator is not a resident of this state, subject to any conditions imposed upon nonresident parties.  When acting pursuant to registration, the conservator is subject to the law of this state governing the action, including, but not limited to, all applicable procedures, and is not authorized to take any action prohibited by the law of this state.  If a law of this state, including, but not limited to, Section 2352, 2352.5, 2355, 2356.5, 2540, 2543, 2545, or 2591.5, or Article 2 (commencing with Section 1880) of Chapter 4 of Part 4, mandates compliance with special requirements to exercise a particular conservatorship power or take a particular step, the conservator of a registered conservatorship may not exercise that power or take that step without first complying with those special requirements.

(c) Subdivision (a) applies only when the conservatee resides out of this state.  When the conservatee resides in this state, a conservator may not exercise any powers pursuant to a registration under this article.

(d) A court of this state may grant any relief available under this chapter and other law of this state to enforce a registered order.