I recently needed to update a Deck that I had shared. Currently the only ways to do this are:-
1) Share under a new name showing the changes
2) "Un-Share" the Deck, thereby Deleting the Shared Deck from the Server and then Re-Sharing the Update. This allows a note about the upgrade too!
Since I used method 2, I note here for other peoples information that if you "Un-Share" the Deck and then Re-Share it very quickly, then the server may actually be still sharing out the original Zip File. I know, since I always download Decks that I share to check them out...
Beware!

I've "Un-shared" again and now I'm gonna leave at least a full hour before Re-Sharing the Updated Deck.
Regards
MysticEast
P.S.
I never knew before that Servers were capable of lying. The server specifically said that the Deck File had been deleted on the Server. Liar! Liar! Liar!
