The reddit guide is still 100% valid
The blockchain should automatically reorganize. It will definitely happen when the v4 chain exceeds the v3 chain. If your v3 (pre-fork) chain was synced to be longer than the current v4 chain, and you're having troubles syncing the current v4 chain, use `intense-blockchain-import --pop-blocks 7500` to manually discard 7500 blocks from your chain.
Yep, I'm seeing the daemon report being ever more behind in blocks at around the 7460 mark so I'll try the blockchain import command.
EDIT - how long does this command usually run for, and how do you know it is done?
EDIT 2 - well, I got an answer to the above question - it terminated "after throwing an instance of 'boost::exception_detail::clone_imp
So I left the daemon up after discarding the last 7500 blocks as instructed earlier and it did, appear, to start from 7500 blocks earlier but the daemon once again seems to be stuck at block 166391 which may or may not be okay. I would like to resume mining, but I would also very much like to ensure coins will make to it my wallet.