(a) Filed record effective if authorized. A filed record is effective only to the extent that it was filed by a person that may file it under Code Section 11-9-509.

(b) Authorization by one secured party of record. A record authorized by one secured party of record does not affect the financing statement with respect to another secured party of record.

(c) Continuation statement not timely filed. A continuation statement that is not filed within the six-month period prescribed by subsection (c) of Code Section 11-9-515 is ineffective.