Do i have to remove ETHD from coinexchange or else it will be of no use?
The swap officially ends on November 10th. You have to either swap it by then or sell it. The ETHD that is currently on CoinExchange will be worthless once the swap has ended. If you have the old ETHD and you haven't swapped it, you have to either sell it on CoinExchange or swap it before November 10th. If you don't, your old ETHD will not become worthless.