* Finish task 70572.

module/upgrade/control.php

@@ -158,6 +158,7 @@ class upgrade extends control
 
             $openVersion = $this->upgrade->getOpenVersion(str_replace('.', '_', $fromVersion));
             $selectMode = true;
+
             if($systemMode == 'classic')
             {
                 $this->loadModel('setting')->setItem('system.common.global.mode', 'lean');

module/upgrade/model.php

@@ -7580,6 +7580,8 @@ class upgradeModel extends model
 
             $productIdList = $this->dao->select('product')->from(TABLE_PROJECTPRODUCT)->where('project')->eq($sprint->id)->fetchPairs();
             $this->processMergedData($programID, $projectID, '', $productIdList, array($sprint->id));
+
+            if($fromMode == 'classic') $this->dao->update(TABLE_PROJECT)->set('multiple')->eq('0')->where('id')->eq($sprint->id)->exec();
         }
 
         $this->fixProjectPath($programID);