How do I import KML files? Patrick Noack2022-02-09T15:01:26+01:0028. August 2020|2. Map Navigation| The Keyhole Markup Language (KML) is an XML-based format for storing geographic data and related content. This format is especially suitable for importing multiple object into your FlyNex platform. How do I import a file in KML format? 1) Open a project. 2) Open the Flight planning / Map function in the project. 3) Click Import KML and upload the desired KML file. (Areas are interpreted as flight rooms, lines as flight routes and points as markers)