Im no expert on the Upgrd/Epic 1.0 and 2.0 cases but i do know that Upgrds 1.0 have 120% HP boost and thats an advantage over the 2.0 (Vit Dekans, Priests, Defenders, Vit Preds?). For the power loss i can only say trade or sell your 120% Upgrd to someone that wants it for the HP rather than cry to Atzigan about it and still talking about base damage old upgrds are far lower than Glacial Upgrds. So UPGRADE your weapon. The good thing about moving to the new ones is getting better DD, Atk Spd, Crit%, MP%, Atk% (Bows and Xbows). I saw a 32% crit Glacial Upgrd Katar and that was awesome. Take the opportunity to make a better weapon and done.