3.8.5 "edit config"

[Gamelobby]

I was just wondering what this meant..?

Please note that the format for config.php in vBulletin 3.5.x is different from previous versions of vBulletin, and you will need to manually update your config file to the new format. Instructions are http://www.vbulletin.com/docs/html/editconfig.

I realize this is meant for 3.5, but i was wondering when you upgrade do you really need to overwrite ALL of the files..?
Is there a list somewhere of the files that need to be overwritten, seems like such a hassle to skip a bunch of images, & other files that never needed to be over written anyway.?

Also i never edit/upload the config file.. because it seems like a waste, which is why that "3.5 editconfig" instruction got me thinking..

Do i need to edit/upload the config file each time i upgrade.?