diff --git a/src/panel/graph_panel/controllers/analytic_controller.ts b/src/panel/graph_panel/controllers/analytic_controller.ts
index e11ee5f..4da6805 100644
--- a/src/panel/graph_panel/controllers/analytic_controller.ts
+++ b/src/panel/graph_panel/controllers/analytic_controller.ts
@@ -220,8 +220,8 @@ export class AnalyticController {
     this.analyticUnits.forEach(a => this._runStatusWaiter(a));
   }
 
-  fetchAnalyticUnitsDetections(from: number | null, to: number | null) {
-    if(from === null || to === null) {
+  fetchAnalyticUnitsDetections(from?: number, to?: number) {
+    if(from === undefined || to === undefined) {
       return;
     }
     this.analyticUnits.forEach(analyticUnit => {
@@ -309,7 +309,9 @@ export class AnalyticController {
 
   async redetectAll() {
     this.analyticUnits.forEach(unit => {
+      // TODO: remove duplication with runDetect
       unit.segments.clear();
+      unit.detectionSpans = [];
       unit.status = null;
     });
     const ids = this.analyticUnits.map(analyticUnit => analyticUnit.id);
@@ -318,12 +320,13 @@ export class AnalyticController {
     _.each(this.analyticUnits, analyticUnit => this._runStatusWaiter(analyticUnit));
   }
 
-  async runDetect(analyticUnitId: AnalyticUnitId) {
+  async runDetect(analyticUnitId: AnalyticUnitId, from?: number, to?: number) {
     const analyticUnit = this._analyticUnitsSet.byId(analyticUnitId);
     analyticUnit.segments.clear();
+    analyticUnit.detectionSpans = [];
     analyticUnit.status = null;
     await this.saveAnalyticUnit(analyticUnit);
-    await this._analyticService.runDetect(analyticUnitId);
+    await this._analyticService.runDetect(analyticUnitId, from, to);
     this._runStatusWaiter(analyticUnit);
   }
 
diff --git a/src/panel/graph_panel/graph_ctrl.ts b/src/panel/graph_panel/graph_ctrl.ts
index fd20df1..246fdde 100644
--- a/src/panel/graph_panel/graph_ctrl.ts
+++ b/src/panel/graph_panel/graph_ctrl.ts
@@ -59,8 +59,8 @@ class GraphCtrl extends MetricsPanelCtrl {
   private _panelId: string;
 
   private _dataTimerange: {
-    from: number,
-    to: number
+    from?: number,
+    to?: number
   };
 
   panelDefaults = {
@@ -273,10 +273,8 @@ class GraphCtrl extends MetricsPanelCtrl {
         await this.analyticsController.removeAnalyticUnit(analyticUnit.id, true);
       }
       if(analyticUnit.status === 'READY') {
-        if(this.range === undefined) {
-          this.updateTimeRange();
-        }
-        await this.analyticsController.fetchSegments(analyticUnit, +this.range.from, +this.range.to);
+        const { from, to } = this.rangeTimestamp;
+        await this.analyticsController.fetchSegments(analyticUnit, from, to);
       }
       this.render(this.seriesList);
       this.$scope.$digest();
@@ -372,8 +370,7 @@ class GraphCtrl extends MetricsPanelCtrl {
     this.dataList = dataList;
     this.loading = true;
 
-    const from = +this.range.from;
-    const to = +this.range.to;
+    const { from, to } = this.rangeTimestamp;
 
     if(this.analyticsController !== undefined) {
       const hsrSeries = await this.analyticsController.getHSRSeries(from, to);
@@ -432,10 +429,9 @@ class GraphCtrl extends MetricsPanelCtrl {
       const from = _.find(series.datapoints, datapoint => datapoint[0] !== null);
       const to = _.findLast(series.datapoints, datapoint => datapoint[0] !== null);
 
+      this._dataTimerange = {};
       if(from !== undefined && to !== undefined) {
         this._dataTimerange = { from: from[1], to: to[1] };
-      } else {
-        this._dataTimerange = { from: null, to: null }
       }
 
       if (series.unit) {
@@ -580,8 +576,13 @@ class GraphCtrl extends MetricsPanelCtrl {
     this.analyticsController.redetectAll();
   }
 
-  async runDetect(analyticUnitId: AnalyticUnitId) {
-    this.analyticsController.runDetect(analyticUnitId);
+  async runDetectInCurrentRange(analyticUnitId: AnalyticUnitId) {
+    const { from, to } = this.rangeTimestamp;
+
+    this.analyticsController.runDetect(
+      analyticUnitId,
+      from, to
+    );
   }
 
   async saveNew() {
@@ -734,6 +735,17 @@ class GraphCtrl extends MetricsPanelCtrl {
     this.$scope.$digest();
   }
 
+  get rangeTimestamp(): { from: number, to: number } {
+    if(this.range === undefined) {
+      this.updateTimeRange();
+    }
+
+    return {
+      from: +this.range.from,
+      to: +this.range.to
+    };
+  }
+
   get hasticDatasources() {
     return this._hasticDatasources;
   }
diff --git a/src/panel/graph_panel/partials/tab_analytics.html b/src/panel/graph_panel/partials/tab_analytics.html
index 72c37bc..b7e9da1 100644
--- a/src/panel/graph_panel/partials/tab_analytics.html
+++ b/src/panel/graph_panel/partials/tab_analytics.html
@@ -113,7 +113,7 @@
         <button
           class="btn btn-inverse"
           ng-if="analyticUnit.detectorType === 'threshold'"
-          ng-click="ctrl.runDetect(analyticUnit.id)"
+          ng-click="ctrl.runDetectInCurrentRange(analyticUnit.id)"
           ng-disabled="analyticUnit.status === 'PENDING' || analyticUnit.status === 'LEARNING'"
           >
           Apply
diff --git a/src/panel/graph_panel/services/analytic_service.ts b/src/panel/graph_panel/services/analytic_service.ts
index 970051e..2935efa 100644
--- a/src/panel/graph_panel/services/analytic_service.ts
+++ b/src/panel/graph_panel/services/analytic_service.ts
@@ -219,11 +219,11 @@ export class AnalyticService {
     return this.patch('/analyticUnits', updateObj);
   }
 
-  async runDetect(ids: AnalyticUnitId | AnalyticUnitId[]) {
+  async runDetect(ids: AnalyticUnitId | AnalyticUnitId[], from?: number, to?: number) {
     if(!_.isArray(ids)) {
       ids = [ids];
     }
-    return this.post('/analyticUnits/detect', { ids });
+    return this.post('/analyticUnits/detect', { ids, from, to });
   }
 
   private async _analyticRequest(method: string, url: string, data?: any) {