I'm not sure if this was already addressed in the emergency update today, but my husband and I both got a similar glitch when trading in AF3+1 items.
http://images.bluegartr.com/bucket/gallery/bcb2b6c0fb2ff69eec0d3d2e2ccca262.png
http://images.bluegartr.com/bucket/gallery/a1f4a992828c97bae62eac3583a3a08e.png
Basically, 2 "dummy" magian trails showed up when trading the seals to the armory crate. We also had to trade the armor item to the crate as well, which we didn't used to have to do, but I felt that was probably intentional.