I’ve set my Welcome scene as the active scene, but it’s still showing the previous scene. I can’t find a way to change it to the new active scene.
“Active scene” does not mean “the other scenes are inactive.” To do that you need to unload them.
Instead, “active scene” means things like “instantiation will happen in this scene” and “I will use this scene’s lighting” (see docs for more).
But otherwise, all loaded scenes are all operating simultaneously, with one of them being “active.”
Sorry, I should have said it is while I’m in Editor that the scene is not showing. I have now discovered that each scene is a separate file and needs to be loaded.
Thanks for your help anyway. It put me on the right track. I still have a lot to learn about Unity.