Well, I'm no expert and to be honest I asked exactly the same above. I am presuming the following: Your situation with Lloyds is the same as my partner's situation with Barclays it seems. He had put his debt of Barclays on his Statement of Affairs, so it was included in his overall debt. The IVA went ahead with this full debt in mind, but Barclays NEVER put in their claim or voted.
Now that my partner wanted to do a F&F settlement we contacted his IP. They said that instead of us offering an amount, they would write to the creditors asking them to restate their claims in light of the probably offer to settle. A letter/phone calls/faxes also went to Barclays at that time of course.
The responses from all claiming creditors came back and amounted to £24,800, but that DID NOT include Barclays as they remained silent. So, we were told that to settle the claims it would be the £24.8 but if Barclays decided to claim then it would be nearly £15K more (which amounted to about what we'd pay over the remaining term anyway).
I understand that claimants, are entitled to claim up to the 5years, as I understand it, but the 11.2 rule says not afterwards - or something like that. And generally the IPs try to get all claims finalised within the first 12 months, or so I read on these blogs.
However, and this is just our assumption, if we had paid the whole amount over 5 years, then we would have paid the original and agreed pence per pound dividend which includes the Barlcays debt, but if they never claimed, the excess would be distributed to the other creditors. Then if the F&F is accepted, as it was, then the pence per pound would be for each individual claim, leaving Barclays with nothing if they continued not to claim.
In the end, we paid 3 years and 2 months early. The amount remaining was just about £37K, give or take a few hundred. (including full IP charges). We paid the dividend for EACH claim, and it amounted to £24.8K. Our IP showed us the calculations and had also put forward to the creditors that by getting their money early they would receive interest and they put that into the calculations to show what they'd get overall.
Hope that helps. I know it's wordy but it's a complicated business. Good luck.