Here are the steps to export the task files:

1. Open the Moon Invoice application on your device or tap on this link.
2. Go to Settings.
3. Click Export Data and select Task.
4. Choose the task details you want to export.
5. Click Next.
6. Select the file type from the dropdown. You can choose CSV, XLS, XLSX, or TSV.
7. Click Export to download the task file.
8. Your task file will be exported to your system in the selected format.