How to transfer Hi-Res Near Map to another model and fix skew

On import the terrain group will be locked so it is protected from accidental modification, bounding box red. Right click on it and select unlock. To transfer your terrain to a new file you can select the terrain with a singe click, copy it, open a new SketchUp file and use Edit>Paste in Place to paste the terrain into the same location in a new file.

As John said terrain is just geometry and once unlocked and can be manipulated or rotated any way you like, as you would with any other geometry. However keep in mind though that if you rotate the terrain you are changing it’s relationship with North and any shadows generated will no longer be accurate. Terrain is location specific and is imported set to it’s true north. If you want a deep dive into this subject you can read up here.