A security interest for the perfection of which filing or the taking of possession was required under the Prior Uniform Commercial Code and which attached prior to the effective date of this Act but was not perfected shall be deemed perfected on the effective date of this Act if the Revised Uniform Commercial Code permits perfection without filing or authorizes filing in the office or offices where a prior ineffective filing was made, provided all steps required for perfection under the Revised Uniform Commercial Code have been taken.