Afaik, yes. Any pieces that have dropped after 2.01 of a certain set should work with other pieces of the same set even if they are lvl 70.
Regardless, the DPS/Toughness/Healing difference between lvl60 and lvl70 items is too big to be covered up by set bonuses.
Oh most likely for sure. But for awhile after launch, my new nats boots I just found will go nicely w/ the 2P set bonus and whatever lvl 70 piece I find =D
sorry about if there was any posts about this ,I just didnt see
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