686eeb11_s___Audit_trail_for_NHibernate__Description
[Property name] nhibernate.envers.revision_on_collection_change [Default value] true [Description] 
Should a revision be generated when a not-owned relation field changes (this can be either a collection in a one-to-many relation, or the field using "mappedBy" attribute in a one-to-one relation).
NHibernate Envers - Audit trail for NHibernate
Description