Looks like it works as it should with a Note 5 on Marshmallow. Sweeping of a wallet works, empty the wallet works. (Still think that should be send all). Ok, so to backup your wallet the behavior is odd. The menu says safety (to me this doesn't mean backup - but is probably pretty good for non English). So you choose safety/backup and set a password. It asks if you want to dismiss or archive(this doesn't really make sense) The archive should really say "Backup". Archive implies that you will never use it again. Then after you hit archive it allows you to email it to yourself. It isn't obvious that it will do this and would be nice if it had some text to say that would be an option in the next menu.