Why are there 2 versions? Was it an editor's bad decision?
I've seen some music of popular classical pieces that are transposed from a more difficult key to an easier key (such as Gb to G major) to make it easier to play for the average 'duffer'.
The reason I asked is that I seem to remember a professor talking about this piece in a piano rep class... something like the first edition was in G major because the editor thought Gb major was too difficult or something... even though the autograph is in Gb major?