We have investigated this issue & found that we unfortunately loose the order date & quantity delivered from Sage when it becomes an invoice. When an order is converted to an invoice in Sage, within the CRM we delete the order line from the sales history & replace it with an invoiced line. Invoices within Sage do not have the order date or quantity delivered on them, which is why we then loose this information. It would be good to still include this information within the sales transaction even though it is an invoice.
