Invoice History

I am building a DB for a physical therapist who tracks client visits thru the month and then invoices the local Health Dept. What's the best way of recording the monthly invoice info? If I make the invoice a report, I can't simply re-run the report, because there may have been changes or mistakes in the initial data entry. So I need to capture the actual invoice.

Thanks,
Mark Received on Wed Apr 05 2000 - 00:00:00 CEST