I tried to find a solid answer on this, but failed, so sorry if this has already been posted.

I have BTC in Bitcoin Core, have never claimed BCH. I tried the Coinomi method and it did not work to claim the BCH. I also searched on blockchair.com and it shows "no results" but I have found other people that said they had that issue also.

So the easiest way to do this seems to copy the folders on another computer and use Bitcoin ABC.

For this method, if I first send the BTC I have to Coinbase, then do the Bitcoin ABC claim, will it still work? I just want to make sure I just need the old wallet files, and not the actually coins to be sitting in there to do the claim. I am a bit sketch on putting that info in and maybe messing something up, rather have the BTC be safe and away before even trying. Any help greatly appreciated.