Quote Originally Posted by AziraSyuren View Post
It's not really an exploit, carrying over timed buffs from instance to instance (and not even that, in this case!) has been a pretty consistent mechanic throughout this game.

There's a difference between an exploit and a stupid mechanic.
They have closed those when found, in-fact when they finally added the cooldown wipe on reset they explicitly mentioned anyone finding a way to abuse that would be met with penalties.