that is why I always move them around in the transmuter...just to make sure. Of course you cannot account for every combination. However, having been burned I try to cover the bases.
Yeah. The thing is that you usually don't care about order when you make fail stones, since all fails are meant to fall out. You care about first good stone, and stone 2 if you are doing T6 on gear with a stat on it already. But if you do T7, fails on stone 2 and 3 dont matter; and if you do T6 on cleaned gear, fails on stone 3 don't matter.
Until now.
Now you have to make sure when making fails with Eclipses that they go onto fail stone in same order as they are meant to, and experiment with that order before making that fail. If they do, you are good to go. If not, you have a broken fail Eclipse stat. If you proceed with one of those bad fails, then you have to discard the whole fail T6 or T7 stone instead of just a single fail stat.