There is a warning regarding users who decide to use the latest version of UE5 and in 5.1.0 any changes made to the default maps are overriden on startup in StarterContent. I am using 5.2.0 for this course, are the default maps also overriden on startup?
I believe they are. You shouldn’t save anything inside these folders - just make a copy and you will be fine. Use File->Save Current Level As to save a map and just copy any other assets you wish to modify in the content browser to your own folder outside the Starter Content folder.