Section 2221 Of Article 2. Residency Confirmation Procedures From California Elections Code >> Division 2. >> Chapter 3. >> Article 2.

. (a) Based on the postal notices on the returned residency confirmation postcards received pursuant to Section 2220, the county elections official shall take the following actions:
  (1) The affidavits of registration of persons whose residency confirmation postcards are returned by the post office as undeliverable and who have no forwarding address shall be placed in the inactive file pursuant to paragraph (2) of subdivision (a) of Section 2226. These persons shall be mailed the confirmation notices described in subdivision (c) of Section 2225.
  (2) The affidavits of registration of persons for whom forwarding addresses within the county or outside the county are received shall be immediately updated to reflect the new address provided by the post office and the former address shall be maintained with the voter record. These persons shall be mailed the confirmation notices described in subdivision (b) of Section 2225.
  (b) All updates to affidavits of registration made pursuant to this section shall be reflected on the voter index as required by Section 2191.