[paulmorriss]

We're still on 7.81, which I believe is the version when the functionality came in. I'm not sure how much is different in that area in 7.82.

However to answer your questions.
It's a pain to have to do a tax claim adjustment when you really want to do a normal adjustment, even to just change the appeal code.
What I do when we do a refund tax "claim" is to exclude those tax claim adjustments which are just really normal gift adjustments on a gift that happens to be gift aided, so they never come out.