(a) The filing office shall maintain a record of the information provided in a filed financing statement for at least one year after the effectiveness of the financing statement has lapsed under AS 45.29.515 with respect to all secured parties of record. The record must be retrievable by using the name of the debtor and,
(1) if the record was filed for record in the filing office described in AS 45.29.501(a)(1), by using the file number assigned to the initial financing statement to which the record relates and the date that the record was filed for record; or
(2) if the record was filed in the filing office described in AS 45.29.501(a)(2), by using the file number assigned to the initial financing statement to which the record relates.
(b) Except to the extent that a statute governing disposition of public records provides otherwise, the filing office immediately may destroy a written record evidencing a financing statement. However, if the filing office destroys a written record, it shall maintain another record of the financing statement that complies with (a) of this section.