Agar aapko kabhi encrypted iTunes backup (ChatStorage.sqlite) ke baare mein warning milti hai toh aapko BINA Tick kiye ek poori tarah se naya iTunes backup karna hoga  "Encrypt iPhone backup"  then extract ChatStorage.sqlite again.
Unencrypted iTunes backup

If the "Encrypt iPhone backup" flag Ye agar grey hua milta hai toh iska matlab hai ki aapke iPhone me kisi tarah ka corporate account configured hai. Agar aisa hai toh aapko aise saare accounts (like Exchange, VPN, Aadi) delete karne honge.