The IReplicaDataChangesInit2 interface is used to initialize the ReplicaDataChanges coclass. The coclass must be intialized before any of the other interfaces in the coclass can be used.
IReplicaDataChangesInit2::Init2 method should be used when exporting data changes from a two way or one way replica. When exporting edits from a check-out replica use the IReplicaDatachangesInit::Init method.