I don't know how this is possible, but I had a 4* lvl 40 Crusader and two Diabolists 4* lvl 30ish that I was raising as food.

Today, when I went to finish leveling the Diabolists, I noticed both were gone. Thought with myself that I might had used them to upgrade something by mistake. Looked for the Crusader and noticed he was gone too.

I didn't notice any other losses (perhaps a 4* piece of chest atk% from lifesteal). I think it's VERY unlikely for me to have made so many mistakes at the same time.

Is there anything you could do about this?