@Sineos Those spaces are the problem. They are present in the original (example) file that was copied for the Ender 6, but if they are there then it won’t save_config. The knowledge base article (which looks like you wrote it, at SAVE_CONFIG section 'bltouch' option 'z_offset' conflicts with included value should be updated with this possible fix as well, it would have saved me hours of searching and needlessly asking this question. Maybe something like “Make sure that the configuration section for BL-Touch does not have any preceding spaces. Example…”
Thanks!