Hi Sherry,
The 'On or before' date on the Register tab of the check run can select invoices based on the Due Date. There is no setting to select invoices based on the Invoice date.
If all invoices have the same Terms (ie Net30 or Net0) then using the 'On or before' can essentially work for the invoice date. For example, if all invoices are due 30 days after the invoice date, then an invoice 45 days old will always be 15 days past due.
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Regards,
Softrak Tech Support