Welcome to the Cisco Learning Network!
Based on your description, it appears that you have duplicate profiles in the Certification Tracking System which may explain why your CCNA certification was not recertified when you passed the recertfication exam in April 2010.
Please note that a valid CCNA certification is required to fulfill the pre-requisite requirement for the CCNP certification.
You should contact the Certification & Communities Online Support team for assistance and they will be able to confirm if duplicate profiles exist. If so, your duplicate profiles can be merged so that your certification/exam records can be updated accordingly. Please reference the following FAQ here for more information.
Every time you register for an exam with Pearson VUE, it is highly recommended that you use the same Cisco/Testing ID to avoid creating duplicate profiles in the Certification Tracking System. Having duplicate profiles in the Certification Tracking System may create issues and delays with your certification/exam progress.
I hope this helps.
Cisco Learning Network Moderator