diff --git a/internal/querynodev2/delegator/delegator_data.go b/internal/querynodev2/delegator/delegator_data.go
index a5a5323369ade..9fd97a6490400 100644
--- a/internal/querynodev2/delegator/delegator_data.go
+++ b/internal/querynodev2/delegator/delegator_data.go
@@ -343,16 +343,7 @@ func (sd *shardDelegator) LoadGrowing(ctx context.Context, infos []*querypb.Segm
 	}
 
 	for _, segment := range loaded {
-		log := log.With(
-			zap.Int64("segmentID", segment.ID()),
-		)
-		deletedPks, deletedTss := sd.GetLevel0Deletions(segment.Partition(), pkoracle.NewCandidateKey(segment.ID(), segment.Partition(), segments.SegmentTypeGrowing))
-		if len(deletedPks) == 0 {
-			continue
-		}
-
-		log.Info("forwarding L0 delete records...", zap.Int("deletionCount", len(deletedPks)))
-		err = segment.Delete(ctx, deletedPks, deletedTss)
+		err = sd.addL0ForGrowing(ctx, segment)
 		if err != nil {
 			log.Warn("failed to forward L0 deletions to growing segment",
 				zap.Error(err),
diff --git a/internal/querynodev2/delegator/delta_forward.go b/internal/querynodev2/delegator/delta_forward.go
index e2ba9234906d2..1e18db75731ca 100644
--- a/internal/querynodev2/delegator/delta_forward.go
+++ b/internal/querynodev2/delegator/delta_forward.go
@@ -85,6 +85,35 @@ func (sd *shardDelegator) forwardStreamingDeletion(ctx context.Context, deleteDa
 	}
 }
 
+func (sd *shardDelegator) addL0ForGrowing(ctx context.Context, segment segments.Segment) error {
+	switch policy := paramtable.Get().QueryNodeCfg.StreamingDeltaForwardPolicy.GetValue(); policy {
+	case ForwardPolicyDefault, StreamingForwardPolicyBF:
+		return sd.addL0GrowingBF(ctx, segment)
+	case StreamingForwardPolicyDirect:
+		// forward streaming deletion without bf filtering
+		return sd.addL0ForGrowingLoad(ctx, segment)
+	default:
+		log.Fatal("unsupported streaming forward policy", zap.String("policy", policy))
+	}
+	return nil
+}
+
+func (sd *shardDelegator) addL0GrowingBF(ctx context.Context, segment segments.Segment) error {
+	deletedPks, deletedTss := sd.GetLevel0Deletions(segment.Partition(), pkoracle.NewCandidateKey(segment.ID(), segment.Partition(), segments.SegmentTypeGrowing))
+	if len(deletedPks) == 0 {
+		return nil
+	}
+
+	log.Info("forwarding L0 delete records...", zap.Int64("segmentID", segment.ID()), zap.Int("deletionCount", len(deletedPks)))
+	return segment.Delete(ctx, deletedPks, deletedTss)
+}
+
+func (sd *shardDelegator) addL0ForGrowingLoad(ctx context.Context, segment segments.Segment) error {
+	deltalogs := sd.getLevel0Deltalogs(segment.Partition())
+	log.Info("forwarding L0 via loader...", zap.Int64("segmentID", segment.ID()), zap.Int("deltalogsNum", len(deltalogs)))
+	return sd.loader.LoadDeltaLogs(ctx, segment, deltalogs)
+}
+
 func (sd *shardDelegator) forwardL0ByBF(ctx context.Context,
 	info *querypb.SegmentLoadInfo,
 	candidate *pkoracle.BloomFilterSet,