diff --git a/cmd/collectors/restperf/restperf.go b/cmd/collectors/restperf/restperf.go
index 121140c90..99e24df35 100644
--- a/cmd/collectors/restperf/restperf.go
+++ b/cmd/collectors/restperf/restperf.go
@@ -1402,6 +1402,8 @@ func (r *RestPerf) pollInstance(records []gjson.Result) (map[string]*matrix.Matr
 		if oldInstances.Has(instanceKey) {
 			// instance already in cache
 			oldInstances.Remove(instanceKey)
+			instance := mat.GetInstance(instanceKey)
+			r.updateQosLabels(instanceData, instance, instanceKey)
 			r.Logger.Debug().Msgf("updated instance [%s%s%s%s]", color.Bold, color.Yellow, instanceKey, color.End)
 		} else if instance, err := mat.NewInstance(instanceKey); err != nil {
 			r.Logger.Error().Err(err).Str("instanceKey", instanceKey).Msg("add instance")
@@ -1409,18 +1411,7 @@ func (r *RestPerf) pollInstance(records []gjson.Result) (map[string]*matrix.Matr
 			r.Logger.Trace().
 				Str("key", instanceKey).
 				Msg("Added new instance")
-			if isWorkloadObject(r.Prop.Query) || isWorkloadDetailObject(r.Prop.Query) {
-				for label, display := range r.perfProp.qosLabels {
-					if value := instanceData.Get(label); value.Exists() {
-						instance.SetLabel(display, strings.Clone(value.String()))
-					} else {
-						// lun,file,qtree may not always exist for workload
-						r.Logger.Trace().Str("label", label).Str("instanceKey", instanceKey).Msg("Missing label")
-
-					}
-				}
-				r.Logger.Debug().Str("query", r.Prop.Query).Str("key", instanceKey).Str("qos labels", instance.GetLabels().String()).Msg("")
-			}
+			r.updateQosLabels(instanceData, instance, instanceKey)
 		}
 	}
 
@@ -1442,6 +1433,20 @@ func (r *RestPerf) pollInstance(records []gjson.Result) (map[string]*matrix.Matr
 	return nil, err
 }
 
+func (r *RestPerf) updateQosLabels(qos gjson.Result, instance *matrix.Instance, key string) {
+	if isWorkloadObject(r.Prop.Query) || isWorkloadDetailObject(r.Prop.Query) {
+		for label, display := range r.perfProp.qosLabels {
+			if value := qos.Get(label); value.Exists() {
+				instance.SetLabel(display, strings.Clone(value.String()))
+			} else {
+				// lun,file,qtree may not always exist for workload
+				r.Logger.Trace().Str("label", label).Str("key", key).Msg("Missing label")
+			}
+		}
+		r.Logger.Debug().Str("query", r.Prop.Query).Str("key", key).Str("qos labels", instance.GetLabels().String()).Send()
+	}
+}
+
 func (r *RestPerf) handleError(err error, href string) (map[string]*matrix.Matrix, error) {
 	if errs.IsRestErr(err, errs.TableNotFound) || errs.IsRestErr(err, errs.APINotFound) {
 		// the table or API does not exist. return ErrAPIRequestRejected so the task goes to stand-by
diff --git a/cmd/collectors/zapiperf/zapiperf.go b/cmd/collectors/zapiperf/zapiperf.go
index 35bf4926e..382510a91 100644
--- a/cmd/collectors/zapiperf/zapiperf.go
+++ b/cmd/collectors/zapiperf/zapiperf.go
@@ -1468,6 +1468,8 @@ func (z *ZapiPerf) PollInstance() (map[string]*matrix.Matrix, error) {
 			} else if oldInstances.Has(key) {
 				// instance already in cache
 				oldInstances.Remove(key)
+				instance := mat.GetInstance(key)
+				z.updateQosLabels(i, instance, key)
 				z.Logger.Trace().Msgf("updated instance [%s%s%s%s]", color.Bold, color.Yellow, key, color.End)
 				continue
 			} else if instance, err := mat.NewInstance(key); err != nil {
@@ -1476,14 +1478,7 @@ func (z *ZapiPerf) PollInstance() (map[string]*matrix.Matrix, error) {
 				z.Logger.Trace().
 					Str("key", key).
 					Msg("Added new instance")
-				if z.Query == objWorkload || z.Query == objWorkloadDetail || z.Query == objWorkloadVolume || z.Query == objWorkloadDetailVolume {
-					for label, display := range z.qosLabels {
-						if value := i.GetChildContentS(label); value != "" {
-							instance.SetLabel(display, value)
-						}
-					}
-					z.Logger.Debug().Msgf("(%s) [%s] added QOS labels: %s", z.Query, key, instance.GetLabels().String())
-				}
+				z.updateQosLabels(i, instance, key)
 			}
 		}
 	}
@@ -1506,6 +1501,17 @@ func (z *ZapiPerf) PollInstance() (map[string]*matrix.Matrix, error) {
 	return nil, err
 }
 
+func (z *ZapiPerf) updateQosLabels(qos *node.Node, instance *matrix.Instance, key string) {
+	if z.Query == objWorkload || z.Query == objWorkloadDetail || z.Query == objWorkloadVolume || z.Query == objWorkloadDetailVolume {
+		for label, display := range z.qosLabels {
+			if value := qos.GetChildContentS(label); value != "" {
+				instance.SetLabel(display, value)
+			}
+		}
+		z.Logger.Debug().Str("query", z.Query).Str("key", key).Str("qos labels", instance.GetLabels().String()).Send()
+	}
+}
+
 // Interface guards
 var (
 	_ collector.Collector = (*ZapiPerf)(nil)