Nice, one more reason why the main post or related post needs to be updated.Never needed one so, I didn't bother checking the tweaks as I can save/load anywhere at anytime with Aziien's RPGMV Cheat Menu.
Also, the original tweak of 'disabling autosave" isn't to completely disable them but to only disable them before the fight and between switching rooms so, it should still auto-save after a fight's ended.