Assemble imported sequence-item scopes

internal/engine/load_input.go

@@ -28,6 +28,7 @@ type acquiredContribution struct {
 	destination         Path
 	relativeDestination Path
 	processing          *sourceVersionProcessingResult
+	nested              *composedDocument
 }
 
 // acquisitionScope is the ordered strict mapping scope produced by one input
@@ -46,6 +47,7 @@ func cloneAcquisitionScope(scope acquisitionScope) acquisitionScope {
 				source: cloneSourceInfo(contribution.source), payload: contribution.payload,
 				document: contribution.document, destination: contribution.destination.clone(),
 				relativeDestination: contribution.relativeDestination.clone(), processing: contribution.processing,
+				nested: cloneComposedDocument(contribution.nested),
 			}
 		}
 	}