The Customer transactions report will print all transactions, regardless of date or status. The Aged Trial Balance has built-in filters (such as Current Balance <> 0).
If you tried the 'Aged as of' option and the invoices don't appear, then the reason for the problem does not have to do with the transaction date.
If these invoices have a current balance other than zero, and the customer selection (ie account set range, report group range, etc) does not have anything to prevent any customer from being selected, then these invoice should appear on the ATB report.
We need to know what report options (all of them) have been set. Also ensure that you don't have any customer selection ranges set from 'blank' to 'blank', but instead 'blank' to 'ZZZZZZ'.
_________________________
Regards,
Softrak Tech Support