When I bought out an auto lease (originated in CA) it was a nightmare. You would think I was the only person in te state who had ever purchased their vehicle at the end on the lease. Multiple trips to DMV and lots of money. And then yes, when it became time for the registration renewal a year later, things were messed up and I could not renew. I ended up going to AAA (they have CADMV services) and not only did they fix the registration once and for all, they managed to get me a refund on the "overpaid" fees from the year before.