You can trash a proforma invoice in Moon Invoice easily by following the steps below.

1. Open the Moon Invoice application on your device or tap on this link.
2. From the main menu on your left, go to Sales ➜ Proforma Invoices.
3. Click the existing proforma invoice, click the three-dot icon (⋮) and select Trash.
4. A confirmation pop-up will appear, where you can click Yes to proceed.