Coinexchange is in the final step is one wallet wich contain all the ethd of users and investors in CE ..i think if CE make an update in the website wich say that " we have a maintenance " and cancel all open trades and in that time swap all ethd in CE and then inform users that their coins is swapped and switched ..or make a warning before the maintenance say " please deposit all your ethd coin from ethd wallet to CE , we will update this coins "
And in the same time dev pay them ...
I think its a good idea .