I don’t have an Eddy Duo and maybe I can’t help you, but Sineos wrote an article in his “Knowledge Base” which looks like a known bug or lack in the “Klipper Architecture / Ecosystem” Klipper Architecture / Ecosystem . (read the thread carefully to understand). He edited the article last time on Jan 25, 2025. So maybe that is still not fixed and looks very similar to your problem SAVE_CONFIG section 'bltouch' option 'z_offset' conflicts with included value . I think this is still valid (please read the edit log here.
I would give it a try.