Flex can integrate with both QuickBooks Desktop and QuickBooks Online. This integration allows you to push Invoices and other elements from Flex directly to QuickBooks, preserving line items, totals, and more.
Integration with QuickBooks costs an additional $50 (US) per month. If you are not paying for QuickBooks integration, then the Accounting Integration page on the Financials menu will be locked. Contact Flex Sales for more information.