Just to keep it more organized and easier to edit, more user friendly if they need to manually edit it.
If you were to checkpoint it, I wouldn't do it by level but by area. So when a guy moves to a new area you could checkpoint that level (or maybe make him go back a level of quests) and do those, this way he can catch up to the guide as some quests may not be available if your rolling through the whole joanas.
Thanks m8...in fact to all of you...just work patiently but nice for profiles to the new version...some work flawless to 20 ...we want to 80 but we will have patiente and will be thankfull for all of you...thanks