Welcome Lorraine. I believe this may be a breach of your IVA. You must check your paperwork thoroughly and inform you IP as soon as you can. Are the regained funds still fluid.....or gone?
Completed IVA - August 2012 pheeeeeeeeeew
Only my opinion - Nothing More Nothing Less
Did they not ask you at the end of each year, as part of the annual review, to confirm whether you had received any unanticipated receipts during the year? How much have you actually received?