I haven't tried it.
But as far as encryption goes, the website has a checkbox next to “Encrypt.” The checkbox is labeled: PS5 Save
Like I said, I haven't tried it, but the next time I edit my save, I'll check it out.
https://rapidgator.net/file/9b817d31ade07ace8180c3d2a522056f/CUSA58757.zip.html
or do it by yourself ;-)
PS4 Savegame edit of Graveyard Keeper 2
Here is the exact step-by-step workflow for PS4 Savegame edit of Graveyard Keeper 2:
Export your save: Copy your Graveyard Keeper PS4...