Letting you know what I think is a bug. Pis, for obvious reasons, not available.

I was looking at only the 6* Resiliance artifacts. There were three, an epic helmet and two gauntlets. Considering replacing the helmet of Melga with the unused helmet I had filtered, I upgraded its level from 1 to 8. I liked it, and clicked to equip it. 

Something happened on screen that I don't clearly remember. May have been normal, but I realized: 

• the helmet had not been removed. 
• And the 6* helmet disappeared and is no longer in my stored arms. 
• AND Melga's numberical rating of power dropped from 14k something to 12k something, perhaps as though the lower level artifact had replaced the existing artifact. 
• AND now, after I rebooted Raid, her level move up to 13,686 - with exactly the same equipment that had been rated at 14k something!. 

I attach the only screenshot I thought to take, after the event.

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Perhaps a db error. Frustrating. I needed that helmet with speed substat. Can it be recovered?

Thanks.