Google lost interest in SketchUp when it found other more accurate and reliable ways to add 3D buildings to Google Earth. The only reason SketchUp had any ability to import data from GE after the sale was that Google granted Trimble a grace period during which to seek some other source of map and terrain data. But, in addition, I don’t think map and terrain data was ever exported from GE in kmz format. SketchUp used to get it via a proprietary Google API. That access is no longer allowed.
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