On November the 15th 2020 The Bitcoin Cash network, a result of a hard fork from Bitcoin, has split into two new blockchains - BCHN and BCH ABC.
To recap, a group of Bitcoin Cash developers led by Amaury Sechet, known as BCH ABC, proposed an update on the Bitcoin Cash network, which has included a controversial new “Coinbase Rule,” which requires 8% of mined bitcoin cash to be redistributed to BCH ABC as a means of financing protocol development.
The upgrade is opposed by another group from the Bitcoin Cash community, known as Bitcoin Cash Node, who removed this so-called “miner tax” from their source code. When some nodes on a network adopt a hard fork and others don’t, then the blockchain will split into two different versions: one with the old software and one with the new software.
BC Vault will follow the majority of exchanges and miners and natively support BCHN as existing Bitcoin Cash wallets.
Should you wish to claim your forked BCH ABC crypto you can do so by exporting the private keys of your existing BCH wallets and importing that private key in BCH ABC software wallet. See: Can I reveal raw private keys of a wallet on BC Vault?