You can duplicate an estimate in Moon Invoice 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 ➜ Estimates.
3. Click on the Estimates or Add an Estimate you want to duplicate.
4. On the right-hand side, click the three-dot icon (⋮) and select Duplicate, then choose As Estimate.
5. It will automatically make a duplicate estimate.