I double-checked and I definitely don't have the +1 armor. It's actually the 1st piece I've turned in for upgrade on this character. Down the road, once my RNG was level 99 I was going to upgrade it for reforge, but I haven't gotten there just yet.

The Japanese midnight turnover didn't do anything (which I suspected, but it was still worth a try), so I've already re-posted on the In-Game Bugs forum. Now I'm just playing the waiting game. Thanks again for your input, I've been racking my brain trying to figure out if I did anything wrong.