I setup a master-detail EODisplayGroup, yet edits of objects do not show up immediately
From EOFWiki
When you setup a EODisplayGroup with an EODetailDataSource, there is a good chance, that the EODetailDataSource may not yet know it's EOEditingContext. Since the designated initializer for EODetailDataSource is initWithMasterClassDescription:detailKey:, the EODataSource will know its EOEditingContext only after qualifyWithRelationshipKey:ofObject: has been called and even then only if object is not nil.
In general you need to use EOMasterDetailAssociation to setup everything correctly.
