California Code, Health and Safety Code - HSC § 102685

When a new birth certificate is established under this article, the State Registrar shall inform the local registrar and the county recorder whose records contain copies of the original certificate, who shall forward the copies to the State Registrar for filing with the original certificate, if it is practical for him or her to do so. If it is impractical for him or her to forward the copy to the State Registrar, he or she shall effectually seal a cover over the copy in a manner as not to deface or destroy the copy and forward a verified statement of his or her action to the State Registrar. Thereafter the information contained in the record shall be available only as provided in this article.