(a) Subject to § 9.509, a person may add or delete collateral covered by, continue or terminate the effectiveness of, or, subject to Subsection (e), otherwise amend the information provided in a financing statement by filing an amendment that:
(1) identifies, by its file number, the initial financing statement to which the amendment relates; and
(2) if the amendment relates to an initial financing statement filed or recorded in a filing office described in § 9.501(a)(1), provides the information specified in § 9.502(b).
(b) Except as otherwise provided in § 9.515, the filing of an amendment does not extend the period of effectiveness of the financing statement.

(c) A financing statement that is amended by an amendment that adds collateral is effective as to the added collateral only from the date of the filing of the amendment.
(d) A financing statement that is amended by an amendment that adds a debtor is effective as to the added debtor only from the date of the filing of the amendment.
(e) An amendment is ineffective to the extent it:
(1) purports to delete all debtors and fails to provide the name of a debtor to be covered by the financing statement; or
(2) purports to delete all secured parties of record and fails to provide the name of a new secured party of record.
(f) A secured party may change the name or mailing address of the secured party in more than one financing statement by filing a master amendment setting forth the name of the secured party and file number of each financing statement and the new name or mailing address of the secured party. The secured party must also provide filing information in computer-readable form prescribed by the Secretary of State.