Bug 34739

Summary: Linked biblios should not be merged (updated) when changes to an authority don't change the authorized heading
Product: Koha Reporter: Nick Clemens (kidclamp) <nick>
Component: MARC Authority data supportAssignee: Bugs List <koha-bugs>
Status: NEW --- QA Contact: Testopia <testopia>
Severity: normal    
Priority: P5 - low CC: m.de.rooy, phil
Version: Main   
Hardware: All   
OS: All   
See Also: https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=29522
Change sponsored?: --- Patch complexity: ---
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Description Nick Clemens (kidclamp) 2023-09-07 17:04:54 UTC 
If an authority record is modified in any way, we trigger a merge to update all biblios using the authority.

This also happens if we merge a duplciate authority into one that is in use, all biblios already attached to the correct authority are updated.

If the heading or controlled indicators or thesaurus have changed, this makes sense, but if not, we are triggering many biblio modifications and reindexes that are not needed.

We also need to consider the case where a See-From is is added and IncludeSeeFromInSearches is enabled
Comment 1 Marcel de Rooy 2023-09-11 06:35:31 UTC 
There is a development about adding URIs from 024 in auth to bib record when merging. A Biblibre report, forgot the number. This would be an exception.
Comment 2 Phil Ringnalda 2023-09-12 20:40:19 UTC 
Bug 22972