I know for a fact this is probably 99.99999% not true, but someone told me this. I know OGP is different, but I also assume they are not stupid. What I was told (rewritten to the English language and not chat speak): "When you advance to a sorcerer, you lose all your points. That's why a bunch of people quit." ~ A level 50 who claimed to have several 80+'s.
From what I recall, you advance and all your skills get reset depending on your job change (I never advanced, a friend did for me... Hehe...
). I never had Ely skills, but I assume they don't get reset regardless. I also know you should keep all your skill points. I'm not so sure about keeping all the 1st job skills though (as in they don't get reset).
So if someone could clarify this and give examples, that would be nice. (IE: Warrior -> Warlord and Warrior -> Blader)