Read more about Exporting Invoices and changing the Export Format.
Spoonfed will allow you to Export Sales Invoice information (in an .IIF format) for importing into Quickbooks (Desktop or Client/Server version).
The import will update your Customer Ledger Account, the Income Account and, if applicable, the Sales Tax Liability Account in Quickbooks.
Change Format to QuickBooks
To set your Spoonfed account to produce the Export document in the required Xero format, go to Setup > Organization > Invoicing > Account System 'QuickBooks'.
If a Customer already exists in QuickBooks, then the Customer Name in Spoonfed must exactly match the Customer Name in QuickBooks. Otherwise QuickBooks will create a new Customer. This will lead to more than one account for the same Customer in QuickBooks and result in confusion.
It might be a good idea only to create new Customers in Spoonfed, that way you won't get multiple accounts being created.
Quickbooks will use the existing Sales Tax Items provided that the names of Sales Tax Items match with those in Spoonfed. in Quickbooks. If there is no match in QuickBooks, a new Sales Tax Item will be created.