I have divided my point cloud into different layers 'buildings' 'ground' 'high vegetation' etc. For some reason the 'high vegetation' layer is now no longer visible in TBC, if I right click on it in the View Filter Manager and go to properties it tells me there is 19,997,008 points in the layer. I have changed the colour and rendering for the layer but nothing is appearing on the drawing. Any suggestions?? I don't want to start again, I have spent a long time dividing the layers