Ty TomTom, although the 2nd question was already answered, but still good info. The answer you gave to the 2nd question though is more toward a previous question put in the FAQ higher up. This particular question asked about upgrading weapons once you collect all 12 atma, not actually obtaining them with a different weapon. Basically once you have all 12, you can decide which weapon you want to upgrade, regardless if you started the quest on a different Job.