I am a long term holder and I have some coins in addresses before 2017 fork and now I want to spend it. I checked and I saw that I have coins in both chains. I use electrum as wallet. I have two questions. At first, if is possible to send my coins in multi-coin wallet, electrum is only a BTC wallet, so as to spend BCH or BTC or both of them and second if I spend it to an exchange will have any problem.