Every time you edit and save a post the page will be reloaded. That means all scroll positions will be resetted. Not really UX friendly.
This plugin recovers the old scroll position in your Editor after saving. Either HTML or visual editor.
Sounds pretty good? Install now!
Feedback
If you want, you can drop me a line @ocean90 on Twitter or @Dominik Schilling on Google+.
More
Try also some of my other plugins or visit my site wpGrafie.de.