What if I send you KED in KED2 blockchain, and you duplicate this transaction in main chain and take my KED?
If you paranoiac, send KED to exchange or new created own KED address, after September, 16 and only then send me KED2.
Or consolidate yours KED2 coins in new own address and then send to me in KED2 chain.
Remember, if you not withdraw KED from exchange to home wallet before September, 14 - admin from exchange can get yours SCIFI coins instead of you.