There is a possibility that they will re-finance the deal, depending upon your circumstances at the time. However, they would be within the terms of the current agreement to demand repayment of the principal amount, either by sale or repossession.
A word with Shaun and / or Ryan might shed some light on the possibilities.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014
Your mortgage will now be likely part of the bad bank which controls NRAM and others so is effectively state [or taxpayer] owned. They may agree to extend the term but will want to know some way of repayment and a timescale. Some banks are discussing lifetime interest only mortgages so perhaps this will happen and you could qualify.