Yesterday: went to my local Target (Watertown, MA) and purchased $150 in Disney gift cards with Target gift cards no problem at self-checkout.
Today, same store: the payment wouldn't go through (I was using self-checkout) so someone came over to help. That person #1 called someone else over, said "he's trying to buy gift cards with gift cards." Person #2 said "sorry, you aren't allowed to do that." I said I just did yesterday, asked if there had been a policy change, she said "no, you've never been able to do that." So now I knew she didn't really know what she was talking about. I told her that I did yesterday, have been doing so for years as well. She said "that must have been a mistake, that's never been allowed." She called Person #3 over, explained it to him, he said "no, that's never been allowed" and walked away. I asked if I could try the next machine over (the one I used yesterday) and she said "it's not going to work either, but sure." I tried the other machine, broke it up into three smaller transactions ($200, $200, $100) and it went through with no problem. She looked shocked.
Very strange. I know some people had said Target was reporting a glitch and that it should be fixed, I'm wondering if the one machine has been updated so it works again and the other machine needs an update so it won't accept gift cards.