I have created a mapping model in Xcode 5 and it has auto-generated some relationship mappings using destinationInstancesForEntityMappingNamed:sourceInstances:, which is appropriately documented.
However, it looks like in some cases, Xcode 5 is using this method
destinationInstancesForSourceRelationshipNamed:sourceInstances
when auto-generating some of the relationships.
The confusing thing is that it seems to be used for 1-M relationships, but in my case it's mistakenly assuming 1-M when it's actually 1-1.
The relationship between this entity and "order" is actually 1-1.
So given that Xcode 5 is likely wrong, in what case should I be using destinationInstancesForSourceRelationshipNamed:sourceInstances or destinationInstancesForEntityMappingNamed:sourceInstances:?