Lost access to my map

I recently factory reset my pc and installed everything back on it, when I went to load up uefn and tried opening my fortnite map it only gave me an option to convert, before I reset my pc I made sure my map was backed up by revision control. I also tried uninstalling uefn and reinstalling it and still nothing.

Does anyone know the fix for this? I dont wanna lose months of work because of this stupid mistake.