Help:Outdated properties

Outdated properties or orphaned properties, those with zero annotation references,CiteRef::gh:smw:1216 are expected to be removed after CiteRef::code:prop:id:ref has found no remaining references.

Sometimes the "zero" reference displayed in can be deceiving which is also why some properties remain in the list CiteRef::gh:smw:1474 because they still hold a reference beyond the normal "annotation" trait which includes: 
 * Pre-defined properties are excluded from the removal procedure and are non-moveableCiteRef::gh:smw:601
 * User-defined properties marked with zero references but have been explicitly declared (type, description etc.) are not categorized as outdated (the user showed an intend to keep the property)
 * If the "QueryDependencyLinksStore" has been enabled then properties used as printrequest label are being taken into account when validating whether a property has remaining references or not