Depending on android version it might ask if this download is an update. If it is it keeps your current save state.
ok genius, I was consulting before run the update, on the previous updates they recommended to save the files just in case, and I was asking which one were the files to save just in case, if you have Daddy issues go to somewhere else, if you don't have any productive thing to say, just keep your mouth shut. Sometimes is better keep quiet and don't look like an idiot than talk and confirm that...