Hi Preshs_Oz
If the backup you restored does not have the invoice you need, you will need to find an earlier backup that does. Once an invoice is purged, it is gone from that file and cannot be recovered.
When restoring, ensure you are restoring offline and use a clear file name to avoid file mix up. Restored files should be deleted once you have finished what you need to do.
Restored backups may well have 'expired', open as read-only and do not try to Confirm the restored file - this will avoid serial number issues. Keeping the file as readonly also ensures no changes are made to the restored file.
Regards
Gavin
