reply to u/ihaveascone at https://www.reddit.com/r/Zettelkasten/comments/14v2ohz/converting_commonplace_books/

Don't convert unless you absolutely need to, it will be a lot of soul-crushing make work. Since some of your practice already looks like Ross Ashby's system, why not just continue what you've been doing all along and start a physical index card-based index for your commonplaces? (As opposed to a more classical Lockian index.) As you browse your commonplaces create index cards for topics you find and write down the associated book/page numbers. Over time you'll more quickly make your commonplace books more valuable while still continuing on as you always have without skipping much a beat or attempting to convert over your entire system. Alternately you could do a paper notebook with a digital index too. I came across https://www.indxd.ink, a digital, web-based index tool for your analog notebooks. Ostensibly allows one to digitally index their paper notebooks (page numbers optional). It emails you weekly text updates, so you've got a back up of your data if the site/service disappears. This could potentially be used by those who have analog commonplace/zettelkasten practices, but want the digital search and some back up of their system.