Geolocate KMZ - wrong altitude in Sketchup Pro but correct in Google Earth

[Aerilius]

• Does your model show a terrain layer in the layers inspector (generated by SketchUp’s Add Location)?

• To check whether the model has the correct geo-reference including altitude, you can use the extension Attribute Inspector.
  When clicking in empty space (selecting the model), The GeoReference dictionary must display the keys UsesGeoReferencing (true) and ModelTranslationZ.
  See also: Astrodynamically Correct Shadows at Altitudes Much Greater than Z=0 - #3 by DanRathbun