It sounds like some of the scene properties weren’t set to be saved. If you don’t see a list of 8 properties in the SCENES window hit the plus/minus button second from the top right of the SCENES window. Now check all the boxes. This won’t do anything for the scenes that are no longer useable and the only way I know how to get them back is to recreate them with the ConDocs plan generator. If the case is that you’re going to replace all scenes in your SKP file make a copy of it before you do it JIC. Delete all the scenes and section arrows and purge all unused components from the SKP file. Now recreate your ConDoc plan scenes. As long as they are the same name when you go back to Layout and you didn’t override any of the scene settings in Layout you should just be able to update the reference and your scenes should update. Before you do that hit the ConDocs Scene Update and Save button in Sketchup. Let me know if that helps
