Hi welshj. There are a few posts on here about this very subject. It might be worth you having a scroll through e.g. "PPI and IVA" & "PPI claim 3 years after F&F settlement".
IVA journey started: 30th March 2009. Settled: 17th July 2012. Completion Certificate received: 13th March 2013. Breathe. x
I am sure that your IP will want you to declare that you will not be making any claims for mis-sold PPI after your IVA has concluded - and creditors are likely to check with the former IP in any case before paying out to you, in which case the money may belong to creditors.
Why would you want to wait until the IVA has concluded before making the claim - surely you want to see your creditors receive a maximum return?
Neither does forcing someone to take out a policy they neither wanted or needed, on the basis that they had to as a condition of taking out the loan. Some of the banks who were involved in this deserve all that they get to be frank!