Deleted properties and items should not be a red-link. It does not follow the semantics of a red-link. Instead show the ID unlinked and add a short text like "deleted property".
Version: master
Severity: normal
Whiteboard: u=dev c=frontend s=2014-06-03 p=5
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=65533