With Scenery config editor I added manually the scenery entry for LSZH !
Ok, you cause the scenery to conflict with *itself*, by creating a double entry.
Please DO NOT touch the work being done by our installers, which obviously work, and properly support P3D V4 in the right way, using the new add-on.xml method, like any proper P3D V4 scenery should.
If you see the scenery being listed in the Scenery Library as greyed out, it's NORMAL, and it's how it's supposed to be. The sim is telling you that scenery has been added through an add-on.xml file, instead of the old scenery.cfg method.