If there are still issues with two versions of the same map, you can just change the filename...
I just took the version from the ugc files page and changed the filenames in the zip. It's only small so making people redownload from server isn't too bad.
The map itself is unchanged, just the filename and the references in the loading screen texture. Normally when you do this you have to take care to rebuild cubemaps, but that doesn't apply in this case.
http://users.ox.ac.uk/~bras1644/ff_engysunite_r1.zip
Someone else host pls, it's not going to stay there for more than a week or so.