Uploading old VAT Bills and Invoices in Zoho Books

Uploading old VAT Bills and Invoices in Zoho Books

Dear Team,
I have recently migrated to Zoho books from tally. I wanted to maintain my entire data for this FY in zoho books.
However, I am facing problems in creating customers and vendors prior to June '17 i.e. when VAT was applicable.

How do I go about it? Please advise.