When installing Bitcoin ABC, be VERY careful about where it attempts to install itself. By default, it will attempt to overwrite Bitcoin Core in the "Program Files\Bitcoin" directory... and also try to take over your Bitcoin data directory when you run it.
The latest version seems even MORE determined to do this... a fresh install of 0.16.2 does not even prompt you where your data directory should go, it just automatically tries to use the Bitcoin one defined in your registry, even if it is in a custom location!
I would recommend that you copy your Bitcoin Core "data" directory (the one with the wallet.dat and "blocks" folder) to a separate location, then delete all the blkxxxx.dat and revxxxx.dat files that are number 951 or HIGHER... and point Bitcoin ABC at this new data directory using the -datadir=path\to\new\folder commandline argument...
That should put it before the fork, and ready to sync up just the BCH portion of the chain.
I just want to keep things simple. I probably won't be using Bitcoin Core block chain in the future as I now am using a hardware wallet. All coins have been moved away from Armory and Bitcoin Core. So wouldn't it be simpler to just uninstall and delete all Bitcoin core and block chain. Then install a BCH ABC wallet and let it do whatever it wants? I don't really care how long it takes to re-download the block chain.
yes, imo, this would be the much simpler way to do it. if you try to work with a truncated chain terminating at the 8/1/17 fork date like the one HCP is recommending, this means that you have to go back and manually dig out every BTC tx you made when clearing/moving your BTC to Trezor and then construct separate BCH tx's using the same UTXO's in a like for like tx repeat if you will. this is a pain and is the way i'm stuck doing it for now. by my understanding, if you instead sync up an entirely new ABC chain on top of Armory, all your BCH will be on display in the GUI in an up to date fashion thus allowing you to harvest the entire BCH balance in a single tx. at least, that's the way i understand it since i've never done it this way. someone correct me if i'm wrong.
Yes this seems like the way to do it. Anyone else? I want to know before wasting any time spinning my wheels. And would it also help to first remove Armory also? That way Armory would maybe lock on to the ABC program?