hoo added a comment.
This is what happened:
hoo@fluorine:/a/mw-log$ zgrep 'Killer Queen' archive/UpdateRepo.log-20150*
archive/UpdateRepo.log-20150603.gz:2015-06-02 10:49:38 mw1012 wikidatawiki
UpdateRepo INFO: saveChanges: attemptSave for Q829960 failed: The link
[//it.wikipedia.org/wiki/Killer_Queen itwiki:Killer Queen] is already used by
item [[Q18085792|Q18085792]]. You may remove it from [[Q18085792|Q18085792]] if
it does not belong there or merge the items if they are about the exact same
topic. {"private":false}
archive/UpdateRepo.log-20150603.gz:2015-06-02 11:09:38 mw1005 wikidatawiki
UpdateRepo INFO: OnDelete: Killer Queen on itwiki exists {"private":false}
archive/UpdateRepo.log-20150603.gz:2015-06-02 15:48:47 mw1258 itwiki
UpdateRepo INFO: Couldn't find an item for Discussione:Killer Queen (singolo)
{"private":false}
archive/UpdateRepo.log-20150604.gz:2015-06-03 22:23:48 mw1216 itwiki
UpdateRepo INFO: Couldn't find an item for Killer Queen (singolo)
{"private":false}
In a nutshell: The move couldn't be propagated because the target page was
still linked (to Q18085792) and the delete couldn't be propagated because the
page did exist (because the other page got moved to the new name). I don't
really see how we could fix this without removing the consistency check (that
makes sure we only ever unlink pages that don't exist). We could check whether
the page id changed, but that's more work (as we don't have any standard
mechanisms for that) and could be error prone.
TASK DETAIL
https://phabricator.wikimedia.org/T101101
EMAIL PREFERENCES
https://phabricator.wikimedia.org/settings/panel/emailpreferences/
To: hoo
Cc: hoo, Lydia_Pintscher, Horcrux92, Aklapper, Wikidata-bugs, aude, Malyacko,
P.Copp
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