I think there is a danger of over complicating the overpayment situation.
The O/P was paid to the original clmt. The clmt failed to notify the LA (a bottom line legal requirement) – it is not enough to rely on a third party. In any case, there is no official error. As there is no official error, the overpayment is recoverable irrespective of ANY other circumstances.
Now for the target. I’m assuming it is the CURRENT regs (i.e. as amended from April 2006) that apply. Based on the facts stated, I’m also assuming you have [b:b5dbfe5776]HBR 101(2)(a)(i)[/b:b5dbfe5776] in mind. If so, recovery can be “[b:b5dbfe5776]…from such other person, [u:b5dbfe5776]as well as[/u:b5dbfe5776] or instead of the person to whom the overpayment was made[/b:b5dbfe5776]” – my underline. So, you now have two targets.
As an aside, if it’s a late appeal, has the clmt requested an extension of the time limit AND satisfied the “special circumstances” requirement? If it’s an OOT appeal, there may be no need to worry about the guts of the appeal. In any case, there is no right of appeal against actual recovery and the clmt has no chance of avoiding being at least one of the targets.
Regards