Sometimes deletions of pages on client wikis don't result in the link on Wikidata being deleted.
- Sample: https://species.wikimedia.org/w/index.php?title=Special:Log&page=T.C.+Narendran (deletion on 03:01, 5 April 2016 )
- Wikidata item: https://www.wikidata.org/w/index.php?title=Q7672638&diff=357021192&oldid=341496626 (link had to be removed manually in July 2016)
It is thought that is may be due to some administrators being unknown on Wikidata.
Forum discussion: https://www.wikidata.org/w/index.php?title=Wikidata:Contact_the_development_team&oldid=367197823#Deletion_on_WikiSpecies_not_on_Wikidata.3F