I'm afraid I can't duplicate this using Adagio Invoices and Excel 2000, exporting an invoice with date 8/23/00 as an xls format file. Are you exporting as an Excel file or a Comma seperated file?

I can only suggest trying with a new invoice batch, as the problems with the batch totals may also be influencing the date issue (ie a corrupted batch).

You may also want to look into getting an upgrade for Quik Invoice for Windows, to either the lastest version or to Adagio Invoices.