Hi Samuel,
Document numbers cannot be changed in Order Entry after they are posted, so this wouldn't be an option.
To remove invoice from the 'current' list, you would need to ensure they have been printed (or faxed or emailed) so that the print status has been set. Then when Day End is performed, you choose to purge invoices older than X days. Note that you cannot select specific invoices to purge - all of them that meet the date criteria will be removed.
The only possible ways to sort this grid at this time is by document number and by customer number.
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Regards,
Softrak Tech Support