Cal. Fam. Code § 8626

Notwithstanding any other law, an adoption order issued pursuant to this part shall include the names of the adoptive parent or parents and any existing parent or parents who will maintain their parental rights after the finalization of the adoption. A failure to include an existing parent or parents on the adoption order in compliance with this section shall not be construed to terminate the parental rights and responsibilities otherwise maintained under existing law by an existing parent or parents.