[Therion] Problem with kml-File for google Earth

[Markus Boldt]

Hi, 
I have a cave with a length from about 400m. It is shared into 8 separated
*.th and *.th2 Files. 
All worked well, if I want to get a PDF-File with projection plan. 
But in the kml-File (made with: export map -fmt kml -projection plan -layout
standard -output BTH-11-02-06_GS.kml) there are missing part 4 of the cave. 

Has anyone an Idea, where the problem could be? 

Many thanks 
Markus