Hello I have some problems with exporting a kml file and I wonder what I'm doing wrong. I'm using Therion 5.4.4 (2019-05-01) on Windows 7. Aim is to just get the survey lines from a part of the cave system into a kml file. In the thconfig file I select several lines with the "select command". (I used to do this with double click on the data structure on the right side from the compiler window) Generating a pdf file with: export map -fmt pdf -proj plan -o _Output\Reseau_de_lOuysse_southpassage_2019.pdf -layout layout_plan is doing exactly what I want to have. The result is just the survey data from a part of the complete cave system. But exporting a kml file with the same selected lines fails: export model -fmt kml -o _Output\Reseau_de_lOuysse_southpassage_2019.kml This file does not have any survey data in it. Both files are attached. Does anybody have any idea what I'm doing wrong? regards, Torsten