diff --git a/tensorboard/components/vz_line_chart2/vz-line-chart2.ts b/tensorboard/components/vz_line_chart2/vz-line-chart2.ts
index 20dfa1499a..4e62cd3603 100644
--- a/tensorboard/components/vz_line_chart2/vz-line-chart2.ts
+++ b/tensorboard/components/vz_line_chart2/vz-line-chart2.ts
@@ -254,7 +254,8 @@ Polymer({
 
   observers: [
     '_makeChart(xComponentsCreationMethod, xType, yValueAccessor, yScaleType, tooltipColumns, colorScale, isAttached)',
-    '_reloadFromCache(_chart)',
+    // Refer to the cache and, if available, load data of a new visible series.
+    '_reloadFromCache(_chart, _visibleSeriesCache)',
     '_smoothingChanged(smoothingEnabled, smoothingWeight, _chart)',
     '_tooltipSortingMethodChanged(tooltipSortingMethod, _chart)',
     '_outliersChanged(ignoreYOutliers, _chart)',
@@ -318,10 +319,6 @@ Polymer({
   setVisibleSeries: function(names) {
     if (_.isEqual(this._visibleSeriesCache, names)) return;
     this._visibleSeriesCache = names;
-    if (this._chart) {
-      this._chart.setVisibleSeries(names);
-      this.redraw();
-    }
   },
 
   /**