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@fsm-liquid , at a first glance, that would be stupid since the used stake may belong to Steemians or ordinary investors. It's not their fault that some exchanges powered up these steem and used them to vote. So exchanges simply had to convert it (maybe step by step for each customer who agree) like any other steemian. Maybe, (hey @blocktrades just consider...) it's even a good opportunity to get Hive(?) listed at these exchanges during the 'conversion act'.