MySQL Advice / Config Help Needed

Job ID: 31115121

Budget: ₹600 – ₹1,500 INR

Hi,

We are running a PHP based code having MySQL at backend.
DB was designed by someone else and we got code and DB. Now we have migrated code and db to new server and restored everything from provided Backup.

problem: We had data upto 30th July in Backup. Transactions made in db / few tables are lost after few hours and shows data till 30th July.

Is this some config issue / malicious activity?
Related categories: PHP Linux SQL MySQL Database Administration