The refund, if less than £500, you can keep. I don't agree with this particular set of circumstances that you should, but those are the rules and you may as well use them to your advantage. If over £500 then it should go to the IVA (you may be allowed to keep the first £500 and only pay over the difference, check your proposal to be sure).
23+ years in debt advice
I do not post for anyone other than myself