diff --git a/cmd/state/exec3/historical_trace_worker.go b/cmd/state/exec3/historical_trace_worker.go
index 7e9ff54106d..b8dbdecd22b 100644
--- a/cmd/state/exec3/historical_trace_worker.go
+++ b/cmd/state/exec3/historical_trace_worker.go
@@ -240,7 +240,7 @@ type ExecArgs struct {
 	Workers     int
 }
 
-func NewHistoricalTraceWorkers(consumer TraceConsumer, cfg *ExecArgs, ctx context.Context, toTxNum uint64, in *state.QueueWithRetry, workerCount int, outputTxNum *atomic.Uint64, logger log.Logger) (g *errgroup.Group, applyWorker *HistoricalTraceWorker, clearFunc func()) {
+func NewHistoricalTraceWorkers(consumer TraceConsumer, cfg *ExecArgs, ctx context.Context, toTxNum uint64, in *state.QueueWithRetry, workerCount int, outputTxNum *atomic.Uint64, logger log.Logger) (g *errgroup.Group, clearFunc func()) {
 	workers := make([]*HistoricalTraceWorker, workerCount)
 
 	// can afford big limits - because historical execution doesn't need conflicts-resolution
@@ -248,10 +248,10 @@ func NewHistoricalTraceWorkers(consumer TraceConsumer, cfg *ExecArgs, ctx contex
 	heapLimit := workerCount * 16
 	rws := state.NewResultsQueue(resultChannelLimit, heapLimit) // workerCount * 4
 
-	reducerGroup := &errgroup.Group{}
+	g, ctx = errgroup.WithContext(ctx)
 
 	//Reducer
-	reducerGroup.Go(func() (err error) {
+	g.Go(func() (err error) {
 		defer func() {
 			if rec := recover(); rec != nil {
 				err = fmt.Errorf("%s, %s", rec, dbg.Stack())
@@ -295,26 +295,21 @@ func NewHistoricalTraceWorkers(consumer TraceConsumer, cfg *ExecArgs, ctx contex
 
 	// we all errors in background workers (except ctx.Cancel), because applyLoop will detect this error anyway.
 	// and in applyLoop all errors are critical
-	ctx, cancel := context.WithCancel(ctx)
-	{
-		g, ctx = errgroup.WithContext(ctx)
-		for i := 0; i < workerCount; i++ {
-			workers[i] = NewHistoricalTraceWorker(consumer, in, rws, true, ctx, cfg, logger)
-		}
-		applyWorker = NewHistoricalTraceWorker(consumer, in, rws, false, ctx, cfg, logger)
-		for i := 0; i < workerCount; i++ {
-			i := i
-			g.Go(func() (err error) {
-				defer func() {
-					if rec := recover(); rec != nil {
-						err = fmt.Errorf("%s, %s", rec, dbg.Stack())
-						log.Warn("[dbg] 'worker' paniced", "i", i, "err", err)
-					}
-				}()
+	for i := 0; i < workerCount; i++ {
+		workers[i] = NewHistoricalTraceWorker(consumer, in, rws, true, ctx, cfg, logger)
+	}
+	for i := 0; i < workerCount; i++ {
+		i := i
+		g.Go(func() (err error) {
+			defer func() {
+				if rec := recover(); rec != nil {
+					err = fmt.Errorf("%s, %s", rec, dbg.Stack())
+					log.Warn("[dbg] 'worker' paniced", "i", i, "err", err)
+				}
+			}()
 
-				return workers[i].Run()
-			})
-		}
+			return workers[i].Run()
+		})
 	}
 
 	var clearDone bool
@@ -323,16 +318,14 @@ func NewHistoricalTraceWorkers(consumer TraceConsumer, cfg *ExecArgs, ctx contex
 			return
 		}
 		clearDone = true
-		cancel()
+		//rws.Close()
 		g.Wait()
-		rws.Close()
-		reducerGroup.Wait()
 		for _, w := range workers {
 			w.ResetTx(nil)
 		}
 	}
 
-	return reducerGroup, applyWorker, clearFunc
+	return g, clearFunc
 }
 
 func processResultQueueHistorical(consumer TraceConsumer, rws *state.ResultsQueue, outputTxNumIn uint64, tx kv.TemporalTx, forceStopAtBlockEnd bool) (outputTxNum uint64, stopedAtBlockEnd bool, err error) {
@@ -408,10 +401,9 @@ func CustomTraceMapReduce(fromBlock, toBlock uint64, consumer TraceConsumer, ctx
 
 	outTxNum := &atomic.Uint64{}
 	outTxNum.Store(fromTxNum)
-	workers, applyWorker, cleanup := NewHistoricalTraceWorkers(consumer, cfg, ctx, toTxNum, in, WorkerCount, outTxNum, logger)
+	workers, cleanup := NewHistoricalTraceWorkers(consumer, cfg, ctx, toTxNum, in, WorkerCount, outTxNum, logger)
 	defer workers.Wait()
 	defer cleanup()
-	applyWorker.ResetTx(tx)
 
 	workersExited := &atomic.Bool{}
 	go func() {
@@ -494,17 +486,8 @@ func CustomTraceMapReduce(fromBlock, toBlock uint64, consumer TraceConsumer, ctx
 			if workersExited.Load() {
 				return workers.Wait()
 			}
-			if WorkerCount == 1 {
-				applyWorker.RunTxTask(txTask)
-				if txTask.TxIndex >= 0 && !txTask.Final {
-					txTask.CreateReceipt(tx)
-				}
-				if err := consumer.Reduce(txTask, tx); err != nil {
-					return err
-				}
-			} else {
-				in.Add(ctx, txTask)
-			}
+
+			in.Add(ctx, txTask)
 			inputTxNum++
 
 			//select {