I am following the Cesium for Unreal Procedurally Spawning Foliage Guide:
Procedurally Spawning Foliage – Cesium
But a lot of the ACesiumGeoreference Class Reference methods are no longer members of ACesiumGeoreference and checking the documentation most of these has been renamed.
Is the guide currently being updated or is there no plans to keep the guide up with the new CesiumGeoreference class?
Hi @Haraldwangsvik, welcome to the community!
Indeed, we have a backlog of tutorials that we unfortunately haven’t been able to update (yet). We have a GitHub issue that tracks this, and the procedural foliage tutorial is on our list 
I understand the inconvenience, though, and I apologize for the friction this causes. We’re happy to help with any questions you may have in the meantime.
Thanks for the answer 
I have everything sat up as seen in the tutorial with the only changes being new method names and some other changes due to newer version of unreal (for example Emitter attribute “Data” of type Grid2D Collection no longer has an option to set Num Cells X and Num Cells Y).
I have also downloaded and closely matched with the github project on cesium procedural foliage (SquarerFive/cesium-procedural-foliage).
Almost everything seems to work fine, the last issue is that RT_Classifications does not get/create any output. No green or yellow pixels are generated for the spawner to spawn trees. As everything else is set up to match the tutorial/github, are you aware of some essential change for newer Unreal or Cesium versions that has to be changed for this to work?