To delete the old invoice that has already been paid you need to "Delete from HLINK". In order to do that you'll first have to "unsettle" it because ClinicAid will automatically settle bills that come in as accepted.
1. Search for invoice in the manage invoices screen
2. Select it and click the "unsettle" button (you can also unsettle an invoice on its "view" screen)
Once you've "unsettled" the claim, the status will change to "Accepted" and it will be found in the "ALL" tab.
3. Click to view the invoice
4. Press the red "Delete from HLINK" button and follow the prompts to delete it