The import/export feature is designed mainly to be used within TaxiCaller. For example, you can use it to back up the zones you have already created, or to copy zones from “Assignment Zones” to “Tariff zones.” While external GeoJSON files can be imported, it will not necessarily work with those created for other purposes.
Requirements: ID, code and name properties need to be specified in the GeoJSON polygons to allow the TaxiCaller system to read them as zones.
You can find more information in our manual: Import and export zones