Maps not saving

Hi there! I just started using UE4 yesterday and am running into the issue where my maps won’t save. I started off using the already pre-made example levels and moved on to a blank level. Regardless of what I do, whenever I the UE4 Editor after hours of work and saving, the map is gone once I return and I don’t know if I am doing something wrong, but it keeps changing my maps to the basic example levels. Am I doing something wrong?


Not offering a solution I am afraid. I am having the same issue with Unreal 5.
I created a project with free map - used Sequence to move camera etc. Saved it all etc. When I opened the project next time I found the map had not saved!!! Very annoying. Did you get a solution? If so I’d be keen to hear it.