MY MIRROR SHIELD SIMPLY DISEAPEARED!!!

Well, today i tried to update/forge my Perseu’s Mirror Shield, and a very strange thing happened. I put a five stars item and paid 10m of gold to forge my mirror shield and my shield simply DISEAPEARED!

This just can be a BUG! I want my shield, my 5 stars epic item and my gold back! I spend real money in this game with GEMS! So its not fair that i lost my item doing a common procedure like this!!!

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Oh shit, it becomes a cursed chest in my account? Why the game don’t show something explaining what will happen? This is the biggest mistake is this! Why can i realize that something diferent will happen?

Cursed chests were introduced some updates ago, it was also explained how it works, you shuffle 1 unique and get another.