Bitcoin Cash has implemented two way replay protection so any transactions created with a Bitcoin Cash wallet (e.g. Bitcoin ABC) will be invalid to the Bitcoin network and anything created with a Bitcoin wallet (e.g. Bitcoin Core) will be invalid to the Bitcoin Cash network.
You just mean if any new address is generated after August first or any address generated on a bitcoin wallet at all will be invalid to BCC after August first?
I'm going to be dumping mine asap too, I will gladly be the first one to test the transactions

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