The solution above was that I had to fix the problem in MSFS!
I still would like to decide if I want a runway included in the generated flightplan.
The dropdown’s “Departure Rwy” and “Arrival Rway” should offer a “not selected” choice as well.
Or did I miss something?
Preferrably also get rid of the SID STAR. I can though update the Fplan removing them before generate it.
I have now added the FS2020 (No SID/STAR) format, which will not include SID/STAR procedures in the XML file.
From my testing it is not possible to have MSFS not select a runway. If I omit the runway from the XML file, it will simply select the first runway in the list when importing. However, I am able to change the runway after importing (using the dropdown selectors above the world map) without it resetting the imported route, so this shouldn’t cause any problems.