Maybe I am doing this wrong. I vaguely remember, at some point in the past, that when I would change a password on a web site, I would have the option to update the current 1password entry. Now, it seems that whenever I change my password, I only get prompted to save the new password as a new entry. I admit that since I have 1password and really secure passwords I may not change passwords as often as I should so I don't actually know when the problem started.
I haven't upgraded beyond 3.8 because one of my machines is running Mac OS 10.7.5 and can't be upgraded beyond that.