Hi identitycreative,
Reports should be used in conjunction with some filters eg. Date range, Car type, Driver etc. and only the visible Orders on the page will be exported to the CSV report.
Default orders view was set to 20 but in Taxi Booking 3.10.6 we have added the option to select more orders (up to 1000) and export them to CSV at once.
More sophisticated report functionality will be developed with CSV report builder for Orders when we reach required funding:
http://kanev.com/development/taxi-booking/43-csv-export-builder-for-orders-reports
Hope this helps.
Best regards.