diff --git a/module/execution/model.php b/module/execution/model.php
index 9cc2b97457..935948e75b 100644
--- a/module/execution/model.php
+++ b/module/execution/model.php
@@ -2791,15 +2791,69 @@ class executionModel extends model
     public function computeBurn()
     {
         $today = helper::today();
-        $burns = array();
-
         $executions = $this->dao->select('id, code')->from(TABLE_EXECUTION)
             ->where('end')->ge($today)
-            ->andWhere('type')->ne('ops')
+            ->andWhere('type')->in('sprint,stage')
             ->andWhere('status')->notin('done,closed,suspended')
             ->fetchPairs();
-        if(!$executions) return $burns;
+        if(!$executions) return array();
 
+        /* Update historical data of burn. */
+        $table = $this->config->edition == 'open' ? TABLE_TASKESTIMATE : TABLE_EFFORT;
+        $field = $this->config->edition == 'open' ? 'task' : 'objectID';
+        $totalConsumed = $this->dao->select("t2.execution as execution, t1.$field as task, t1.date as date, sum(t1.consumed) as totalConsumed")->from($table)->alias('t1')
+            ->leftJoin(TABLE_TASK)->alias('t2')->on("t1.$field=t2.id")
+            ->where('t2.execution')->in(array_keys($executions))
+            ->beginIF($this->config->edition != 'open')->andWhere('t1.objectType')->eq('task')->fi()
+            ->andWhere('t2.deleted')->eq('0')
+            ->andWhere('t2.parent')->ge('0')
+            ->andWhere('t2.status')->ne('cancel')
+            ->andWhere('t1.date')->ne($today)
+            ->groupBy("t1.$field, t1.date")
+            ->orderBy('t1.id_desc')
+            ->fetchGroup('task', 'date');
+
+        $maxIDList = $this->dao->select('max(id) as id')->from($table)
+            ->where($field)->in(array_keys($totalConsumed))
+            ->beginIF($this->config->edition != 'open')->andWhere('objectType')->eq('task')->fi()
+            ->groupBy("$field,date")->fetchAll('id');
+        $lefts = $this->dao->select("$field, date, `left`")->from($table)
+            ->where('id')->in(array_keys($maxIDList))
+            ->fetchGroup($field, 'date');
+
+        $burnList = array();
+        foreach($totalConsumed as $taskID => $consumedList)
+        {
+            foreach($consumedList as $date => $consumed)
+            {
+                $executionID = $consumed->execution;
+                if(!isset($burnList[$executionID])) $burnList[$executionID] = array();
+
+                if(!isset($burnList[$executionID][$date]))
+                {
+                    $burnList[$executionID][$date] = new stdclass();
+                    $burnList[$executionID][$date]->consumed = 0;
+                    $burnList[$executionID][$date]->left     = 0;
+                }
+
+                $burnList[$executionID][$date]->consumed += $consumed->totalConsumed;
+                $burnList[$executionID][$date]->left     += $lefts[$taskID][$date]->left;
+            }
+        }
+
+        foreach($burnList as $executionID => $burns)
+        {
+            foreach($burns as $date => $burn)
+            {
+                $burn->execution = $executionID;
+                $burn->date      = $date;
+
+                $this->dao->replace(TABLE_BURN)->data($burn)->exec();
+                $burn->executionName = $executions[$burn->execution];
+            }
+        }
+
+        /* Update today's data of burn. */
         $burns = $this->dao->select("execution, '$today' AS date, sum(estimate) AS `estimate`, sum(`left`) AS `left`, SUM(consumed) AS `consumed`")
             ->from(TABLE_TASK)
             ->where('execution')->in(array_keys($executions))
@@ -2851,8 +2905,10 @@ class executionModel extends model
 
             $this->dao->replace(TABLE_BURN)->data($burn)->exec();
             $burn->executionName = $executions[$burn->execution];
+            $burnList[$executionID][$today] = $burn;
         }
-        return $burns;
+
+        return $burnList;
     }
 
     /**
diff --git a/module/execution/view/computeburn.html.php b/module/execution/view/computeburn.html.php
index ea9ea7d339..8cbbbff589 100644
--- a/module/execution/view/computeburn.html.php
+++ b/module/execution/view/computeburn.html.php
@@ -11,8 +11,11 @@
  */
 ?>
 <?php
-foreach($burns as $burn)
+foreach($burns as $executionID => $burnList)
 {
-    echo $burn->execution . "\t" . $burn->executionName . "\t" . $burn->date . "\t" . $burn->left . "\n";
+    foreach($burnList as $date => $burn)
+    {
+        echo $burn->execution . "\t" . $burn->executionName . "\t" . $burn->date . "\t" . $burn->left . "\n";
+    }
 }
 ?>