I don't get any such option. The only thing that works for me is to click Duplicate then Save... and give it a new name. I want to encrypt so I select that option then give the password. No other options appear. I have to go through this every time I open the file. I'm now on "...21d...". Next letter in the alphabet each time I work on it! Neither the AutoSave nor the Save option work for me. I must be missing something!
