aspdaddy - 10:55 pm on Nov 20, 2011 (gmt 0)
It depends on what you are trying to achieve really. If you are expecting further significant growth, preparing to value the company then you need to do this process the right way.
Call the finance system web service from your ecom system to create a new invoice, that way you dont need to import them. All enterprise finance systems have APIs for doing this. If your technology stack is M$ then hosted GP would be the obvious choice.
You can import orders, but not usually invoices into a finance system