Each state has its own requirements and rules about manufactured home titles. I am not familiar with your state's
BUT... in most states once the title is retired the home is considered a permanent fixture of the real-estate very much like a site built home. The home is then taxed as part of the real-estate and you no longer will have to pay the yearly registration and tag fees to the department of motor vehicles.
Someone from SC.... jump in here with better specifics for your state.