Map gets corrupted when uploading it

I was able to open the map but its empty, I assume it hasn’t used revision control at some point in time. Unreal Revision Control in Unreal Editor for Fortnite | Unreal Editor for Fortnite Documentation | Epic Developer Community

Revision Control is really important because that’s responsible for your data to be saved on the cloud and able to be downloaded if the original data is lost or if you want to upload your changes for other teammates to see and work together, think of it like google drive, you should Upload the changes every now and then, I’d recommend checking that document out when there’s some free time.

Regardless for now just press Check-In Changes


And in the box just write some kind of description and hit submit (it doesnt matter that much think of it like a note of your upload)

Yep, found the issue. This project has 2 levels The MyProjectB level is the outdated one while the one you are working with is called blackwhite1v1

Try following the steps I mentioned before,

Essentially just open the GameFeatureData asset


And replace on the “Default MapMyProjectB with blackwhite1v1 and save.

That should solve your problem.

And unrelated but something I would stress heavily is to REGULARLY check in your changes with the unreal revision control, its better to be safe than sorry