Anki 25.9.2: Field info reassignment to other fields for all cards in a deck

*I honestly searched LLMs, google and the manual for this issue and haven’t been able to locate an answer if it exists, possibly because I haven’t searched the right terms so I apologize for that*

I changed the note-type of one of my decks and the info has remapped incorrectly. What is the procedure for taking the text data from one field for all cards in the deck, and placing it in another? I can obviously copy paste for a single card but not the whole deck.

I thought the search and replace function might work, but nothing happened.

I thought the front / back / style code might solve it but no beuno.

Please assist

EDIT: this is not a duplicate post. I posted on Reddit .com, which is a different platform. I’m not sure how the community members of each differ but would have appreciated advice here at least for the time frame given on the post!

Duplicate post: Reddit - The heart of the internet