I started playing online, then decided to play also offline and then I decided to play on modding games. But, I still play on all those different instances of the game, and using different characters too. So, exporting and importing are great when I want to switch from one to the other and still keep track of the point I left it before.
In any case, I just miss some way to assign significative names to distinguish between different saves. Something like naming a save "Before trying Hot'n'Ready", so to try difffeent alternatives presented in the dialogs and chose the one I believe suits better for my character dev.