In the cataloging chapter the paragraph describing dontmerge needs to be updated to reflect the changes made with bug 3178. It currently reads: Once you’ve made the necessary edits, simply click ‘Save’ and dontmerge is set to ‘Do’, Koha will immediately update all of the bib records linked to the authority with the new authority record’s data. If dontmerge is set to “Don’t” then Koha won’t edit bib records when changes are made to authorities, rather, this is done later by the merge_authority.pl cronjob. dontmerge system preference doesn't exist. AuthorityMergeLimit is used with different options.
Done.