I'm trying to reproject a pojnt cloud (las file) from UTM30N to HS2 Survey Grid (local UK projection). This also included a vertical datum shift. I was attempting to use the Extract LAS tool and setting the output coordinates horizontal and vertical in the environment setting. The horizontal conversion works OK but the z values were not changed.
I then saw this message in the tool help
"The input point cloud can have its horizontal coordinate system reprojected into a different spatial reference by specifying the Output Coordinate System environment setting. Additionally, z-unit conversions can be achieved by ensuring that the vertical units are defined through a vertical coordinate system. However, a vertical datum transformation is not currently supported. You must ensure that any horizontal coordinate system conversion can maintain the original vertical coordinate system."