There is no requirement you use the same firm but it might be the most economical way to go should you choose to use an attorney (there is no requirement that you do so), as they will be familiar with and presumably have copies of your file any orders in effect would normally remain in effect, although depending on their nature it is possible the passage of time has impacted their continuing validity. Depending on what those orders were, it might be possible to simply re-submit but I would advise that at the very least you have a lawyer look over whatever you plan to submit.
Answered on Dec 04th, 2012 at 12:15 PM