PS: There are already AI add-ons out there, but I find them either too complicated to use, or you have to generate your own API key etc… So not user-friendly for the less tech-savvy people out there!
To answer your question, unfortunately no it only generates new cards, it doesn’t update existing ones.
Interesting use-case, although more complicated to solve for!
So far, I’ve only focused on productizing my way of creating cards for myself, which might be a bit crude for most Anki-veterans out there
But interested to get feedback and explore what to improve (including updating existing cards!)