Do I have to register my protection order in California to get it enforced?
No. California state law gives full protection to an out-of-state protection order and allows the courts to enforce the order even if it contains provisions that could not be included in a California DVRO.1
Police officers also have to enforce out-of-state protection orders as long as you can show the officer a copy (it does not have to be a certified copy, and can be an electronic copy) of the order and can truthfully tell the officer that you believe the order is still in effect.2 The order does not have to be entered into the state or federal registry in order to be enforced by a California police officer, but the officer does need to believe that it is a valid (real) order.3
1 Ann.Cal.Fam.Code § 6402(a)
2 Ann.Cal.Fam.Code § 6403(a)
3 Ann.Cal.Fam.Code § 6403