Question about obis for CDs

[criminal]

This isn't really believable, but seeing as how "made" means until, maybe it's the final date you can purchase the product? Or maybe the final date of production?
Judging by the CD scans at Divine Ayu, Daybreak was the last single with the "made" date, since the MY STORY era singles don't have it. The RAINBOW era singles are all OS versions, so maybe Japanese versions of those singles have it too.