I think you're over thinking this. If it doesn't say it in the manual (which it does in mine) then a simple google will help you fix your problem. It is definitely nothing wrong with the game. Don't forget, there are people who are still new to the series, and this other self-explanatory stuff is needed.yeah how about they remove the ability to delete a save all together. that way, no one can remove your hard work...
If they can't write about it in the manual, but they can write about other pointless and self explanatory stuff, then something is wrong.
EDIT: oh yeah, if that first part was true, your pre-owned copy would be fucking useless.