How can I import location data using regular GeoJSON or GPX standards ?

Hello there, johenkel. You are correct that QBSE only supports Google Takeout and MileIQ imports and they don't natively support the open-source GeoJSON or GPX formats.

As your data is in a standardized format, you can convert your file into the Comma-Separated Values (CSV) format that is compatible with the QuickBooks import tool.

After you have prepared your CSV and ensured it is properly formatted, you can import your trips:

1. Sign in to QuickBooks Self-Employed on a web browser.
2. Go to the Miles menu.
3. Select the Add Trip ▼ dropdown. Then select Import MileIQ trips.
   
4. If you already have your mileage in a CSV file, select Browse and upload the CSV.

Then, follow steps 2-3 in the article about categorizing and tracking them in QuickBooks: Switch from MileIQ to QuickBooks Self-Employed.

If you have further questions, don’t hesitate to ask here at any time. I'm here to help.