Latest news article needs an errata.
" Whateley’s Diary ( Dunwich Denizens , 77) can transfer the success tokens you place on your Fated characters to cards where they are more useful."
Unfortunately it does not work with characters - only between stories - and therefore does not work directly with non-story Fated cards at all, which the article then acknowledges as it goes on to try and correct itself…
"The game’s FAQ (pdf, 12.0 MB) prevents players from redistributing success tokens across different types of cards, meaning that you can’t move your success tokens from your Fated character to a story."