Hi Andy
That really depends upon the wording of the debtor's proposal (or more usually the creditors modifications!)
These days, I regularly see provision for the debtor's repayments to be automatically adjusted for the remainder of the term in line with increased mortgage payments. Earlier proposals do not necessarily give guidance, which probably leaves the IP with no choice but to vary the IVA to take account of reduced payments.
That's why I do not like 4th year revaluations and equity releases. Either do it right at the beginning or at the end for clarity.
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