The first "A Sword Reforged", was the first part of two quests to get an exotic sword. The three quests that you received are the actual quests that give the exotic swords.
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Thank you. I actually figured this out later, trying to get an answer. I swear I did the first step of the second part before but oh well. Thanks anyways!
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I've never done the sword quests because I refuse to go into PvP, but I understand that you only have to do the 50 major/25 guardian kills once. Once you finish the quest for the first sword, the other two start at collecting materials. It's possible to complete the final step of all three quests at once if you manage to kill all three elemental Wardens and Alak-Hul within 30 seconds in the special strike.