Hi trionion
It is quite likely that your Supervisor has retained a sum of money sufficient to meet the costs of petitioning for your bankruptcy in the event of IVA failure. This is quite normal, and something which may in fact have been stipulated by your creditors in the first place.
With regard to your re-mortgage, Andy is right and this must be based upon affordability. As you will not be funding IVA contributions when you re-mortgage, it is fair to assume that you will be able to afford to raise a substantial portion of the equity, and a lot of lenders will now go as far as 90% loan to value for customers subject to IVA proceedings.
It is too early to even worry about this at the moment. My advice, for what it is worth, is to review the situation in conjunction with your own IP in a year's time.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk