Page reloading with scrolling to top after every edit is a quite annoying thing. IMHO in-place edit should be done using AJAX. Thanks.
It is already done by AJAX in modern browsers, you just didn't notice it :-). There is a forced scroll however to show the success messeage.
All right (I was too lazy to check if edit done by AJAX), but scrolling up should be definitely omited. Maybe it's better to show something like top modal panel with edit status message?
I'm not going to implement this because I've tried it and the behavior is too confusing. Download source codes and comment scrollTo(0, 0) in the functions.js and you will see for yourself.