(a) Subject to section 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 section 9-501(a)(1), provides the information specified in section 9-502(b).

(b) Except as otherwise provided in section 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.