Does anyone know what states (or where I can find this info) were dual filing states before Revised Article 9 went into effect? Hypo: If someone filed at the state level in 1999 but failed to file at the county level, did that mean that the secured party failed to perfect its security interest? However, since the UCC was in fact filed in 1999, did the security interest become perfected on the date that RA9 went into effect, since RA9 abolished dual filing requirements??