AFPAA are particularly poor in this respect. Getting the right run around at the mo over paperwork - I've sent them everything they've asked for, initially submitting everything required in the jsp and they keep asking for additional proofs. Meanwhile I'm down 5 big ones, which are languishing in their account and not mine.
JPA or no, this allowance and the rules pertaining to claims predate JPA and have not changed, so I don't see why this shouldn't be a straightforward process like any other allowance and processed with similar alacrity.
Rant over.