Hi -- are you "wanting" to re-mortgage, or "need" to re-mortgage to release equity for the IVA?
At the moment no-one is able to re-mortgage and, usually ( depending upon the wording in the proposal) a 12 month extension is applied instead. You will not be made to sell.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014