Had one of my legendary ability stones poof on me just now when I was changing my integrated preset before going into a raid. It would be great to get this back as I got a great deal on it… some bug.
Welcome to the forums and thank you for share your situation here!
I would recomend first to check on all you storage and inventory just in case it was moved to a different one. If there is no luck on the search it will be wise to contac us by the live channels in order to take the necessary actions on your specific case!
Hope this help hero.