fix(influxdb): Fix for Ad-Hoc Filters variable & changing dashboards, fixes #6821

public/app/features/dashboard/unsavedChangesSrv.js

@@ -110,6 +110,7 @@ function(angular, _) {
       _.each(dash.templating.list, function(value) {
         value.current = null;
         value.options = null;
+        value.filters = null;
       });
     };
 

public/app/features/templating/templateSrv.js

@@ -25,6 +25,7 @@ function (angular, _, kbn) {
     this.updateTemplateData = function() {
       this._index = {};
       this._filters = {};
+      this._adhocVariables = {};
 
       for (var i = 0; i < this.variables.length; i++) {
         var variable = this.variables[i];