Migration from Tally to Zoho books

We are currently using Zoho books and our CA is using Tally for maintaining our account books. Over the years we have noticed that there are some differences that have come between our audited statements and our internal Zoho books. So need to correct all the entries in Zoho books so that it matches our CA's records accurately for the last 3 years (not including this financial year). We need the person to be based in Hyderabad