If your California programme was built for the January 1, 2020 CCPA launch and then only lightly patched, the fastest route is a focused remediation sprint rather than a full rewrite. CPRA raised the cost of stale assumptions in notices, adtech, contract structure, and workflow evidence.
The control surfaces worth testing first are the ones consumers and regulators will touch immediately: scope decisions, notices, links, request handling, downstream propagation, vendor classification, and incident or complaint routing.