fix issue

apps/edr-freight-api/src/modules/train-scheduling/services/train-scheduling.service.ts

@@ -8821,6 +8821,13 @@ export class TrainSchedulingService {
                         allocatedWeightTons: roundTons(Number(allocation.allocatedWeightTons)),
                         loadType: allocation.loadType ?? null,
                         status: allocation.status,
+                        // THIS load's own corridor, not the wagon's union span.
+                        // A wagon reused across disjoint legs carries two loads
+                        // with different yards; without these the leg board can
+                        // only draw one merged bar and cannot say which load
+                        // rides which leg.
+                        originYardId: allocation.booking?.originYardId ?? null,
+                        destinationYardId: allocation.booking?.destinationYardId ?? null,
                         containerItems: (containerItemsByAllocation.get(allocation.id) ?? []).map(
                           (item) => ({
                             id: item.id,