How does one switch off VAT on QBO? A client is not VAT registered but VAT column shows on Invoices and Quotes etc.?

A client is not VAT registered but VAT column shows on Invoices and Quotes etc.?

This is annoying as every line item has to be changed.  The client was previously VAT registered, but has not been for more than 5 years.  The import file would have included these old transactions which included VAT.

Thanks

Mandy