I figured it wouldn't hurt to double check here. I'd hate to lose an expensive and rare boe item because of an idiot misclick, especially when I have five Flying stones in my bank. I wouldn't be surprised if the same thing happened to someone else.
If not, I might as well take this time to suggest that the boe Flawless Battle Stone have a different color icon than the bop class specific Battle Stones, since they all basically look the same. I hate to just help make the game more idiot proof, but I'm sad.