diff --git a/module/product/control.php b/module/product/control.php
index 6d57121b53..ef908ccc72 100755
--- a/module/product/control.php
+++ b/module/product/control.php
@@ -824,7 +824,7 @@ class product extends control
         /* Load pager. */
         $this->app->loadClass('pager', true);
         $pager   = new pager($recTotal, $recPerPage, $pageID);
-        $stories = $this->productZen->getStories($projectID, $productID, $branch, 0, (int)$param, ($browseType == 'bysearch' ? $storyType : 'all'), $browseType, $orderBy, $pager);
+        $stories = $this->productZen->getStories($projectID, $productID, $branch, 0, (int)$param, ($browseType == 'bysearch' ? $storyType : 'all'), $browseType, "type_desc,grade_desc,{$orderBy}", $pager);
         $tracks  = $this->loadModel('story')->getTracksByStories($stories, $storyType);
 
         $customFields = $this->productZen->getCustomFieldsForTrack($storyType);
diff --git a/module/product/ui/track.html.php b/module/product/ui/track.html.php
index e25390087b..c1710990a8 100644
--- a/module/product/ui/track.html.php
+++ b/module/product/ui/track.html.php
@@ -28,8 +28,8 @@ foreach($lang->story->trackOrderByList as $orderByType => $orderByName)
     $item['text']     = $orderByName;
     $item['selected'] = strpos($orderBy, $orderByType) === 0;
     $item['items']    = array();
-    $item['items'][]  = array('text' => $lang->story->trackSortList['asc'],  'selected' => $orderBy == "{$orderByType}_asc",  'url' => createLink($app->rawModule, 'track', sprintf($paramTemplate, $storyType, "{$orderByType}_asc")));
-    $item['items'][]  = array('text' => $lang->story->trackSortList['desc'], 'selected' => $orderBy == "{$orderByType}_desc", 'url' => createLink($app->rawModule, 'track', sprintf($paramTemplate, $storyType, "{$orderByType}_desc")));
+    $item['items'][]  = array('text' => $lang->story->trackSortList['asc'],  'selected' => $orderBy == "{$orderByType}_asc",  'url' => createLink($app->rawModule, 'track', sprintf($paramTemplate, $storyType, "{$orderByType}_asc") . "&recTotal={$pager->recTotal}&recPerPage={$pager->recPerPage}&pageID={$pager->pageID}"));
+    $item['items'][]  = array('text' => $lang->story->trackSortList['desc'], 'selected' => $orderBy == "{$orderByType}_desc", 'url' => createLink($app->rawModule, 'track', sprintf($paramTemplate, $storyType, "{$orderByType}_desc") . "&recTotal={$pager->recTotal}&recPerPage={$pager->recPerPage}&pageID={$pager->pageID}"));
     $orderByItems[]   = $item;
 
     if($item['selected'])
diff --git a/module/story/model.php b/module/story/model.php
index 3bcc7025d6..6dd2841a0c 100644
--- a/module/story/model.php
+++ b/module/story/model.php
@@ -3915,55 +3915,6 @@ class storyModel extends model
         return $forceReview;
     }
 
-    /**
-     * 根据产品或项目，获取需求跟踪矩阵。
-     * Get tracks by producr or project.
-     *
-     * @param  int        $productID
-     * @param  string|int $branch
-     * @param  int        $projectID
-     * @param  object     $pager
-     * @access public
-     * @return array|false
-     */
-    public function getTracks(int $productID = 0, string|int $branch = 0, int $projectID = 0, object|null $pager = null): array|false
-    {
-        /* 获取从用户需求开始的跟踪矩阵信息。 */
-        $tracks = $this->getRequirements4Track($productID, $branch, $projectID, $pager);
-        if(count($tracks) >= $pager->recPerPage) return $tracks;
-
-        /* 如果没有用户需求，或者需求不满一页，用非细分的研发需求补充。 */
-        $excludeStories = $this->storyTao->getSubdividedStoriesByProduct($productID);
-        if($projectID)
-        {
-            $stories = $this->getExecutionStories($projectID, $productID, '`order`_desc', 'all', '0', 'story', $excludeStories, $this->config->URAndSR ? null : $pager);
-        }
-        else
-        {
-            $stories = $this->getProductStories($productID, $branch, '', 'all', 'story', 'id_desc', true, $excludeStories, $this->config->URAndSR ? null : $pager);
-        }
-        if(empty($stories)) return $tracks;
-
-        /* 展开子需求。 */
-        $expandedStories = array();
-        foreach($stories as $id => $story)
-        {
-            $expandedStories[$id] = $story;
-
-            if(!isset($story->children) or count($story->children) == 0) continue;
-            foreach($story->children as $childID => $child) $expandedStories[$childID] = $child;
-        }
-
-        /* 获取需求的跟踪矩阵信息。 */
-        foreach($expandedStories as $id => $story) $expandedStories[$id] = $this->storyTao->buildStoryTrack($story, $projectID);
-
-        /* 跟踪列表中追加 noRequirement 项。如果设置了用户需求，跟踪总条目加1。 */
-        $tracks['noRequirement'] = $expandedStories;
-        if($this->config->URAndSR) $pager->recTotal += 1;
-
-        return $tracks;
-    }
-
     /**
      * 根据传入的需求获取跟踪矩阵，返回看板格式数据。
      * Get track by stories, return kanban format.
@@ -3978,8 +3929,8 @@ class storyModel extends model
         if(empty($stories)) return array();
 
         $rootIdList = array_unique(array_column($stories, 'root'));
-        $allStories = $this->dao->select('id,parent,color,isParent,root,path,grade,product,pri,type,status,stage,title,estimate')->from(TABLE_STORY)->where('root')->in($rootIdList)->andWhere('deleted')->eq(0)->orderBy('type,grade,parent')->fetchAll('id');
-        $leafNodes  = $this->storyTao->getLeafNodes($stories, array_keys($allStories));
+        $allStories = $this->dao->select('id,parent,color,isParent,root,path,grade,product,pri,type,status,stage,title,estimate')->from(TABLE_STORY)->where('root')->in($rootIdList)->andWhere('deleted')->eq(0)->fetchAll('id');
+        $leafNodes  = $this->storyTao->getLeafNodes($stories);
 
         $tracks = array();
         $lanes  = $this->storyTao->buildTrackLanes($leafNodes, $storyType);
@@ -3998,7 +3949,7 @@ class storyModel extends model
      * @access public
      * @return array
      */
-    public function getMergeTrackCells(array $tracks, array $showCols): array
+    public function getMergeTrackCells(array &$tracks, array $showCols): array
     {
         if(empty($tracks)) return array();
 
@@ -4014,10 +3965,9 @@ class storyModel extends model
             }
         }
 
-        $firstCol   = zget(reset($storyCols), 'name', '');
         $leafNodes  = $tracks['leafNodes'];
         $mergeCells = array();
-        $preRoot    = 0;
+        $preParent  = array();
         foreach($tracks['lanes'] as $lane)
         {
             $laneName = $lane['name'];
@@ -4026,20 +3976,16 @@ class storyModel extends model
             $story    = zget($leafNodes, $storyID, '');
             if(empty($story)) continue;
 
-            if($preRoot != $story->root)
+            foreach($storyCols as $i => $col)
             {
-                $preRoot = $story->root;
-                continue;
-            }
-            if(!empty($tracks['items'][$laneName][$firstCol])) continue;
+                if(!isset($preParent[$i]) || !isset($story->parent[$i]) || $preParent[$i] != $story->parent[$i]) continue;
 
-            foreach($storyCols as $col)
-            {
                 $colName = $col['name'];
-                if(!empty($tracks['items'][$laneName][$colName])) break;
+                if(!empty($tracks['items'][$laneName][$colName])) $tracks['items'][$laneName][$colName] = array();
 
                 $mergeCells[$laneName][$colName] = true;
             }
+            $preParent = $story->parent;
         }
 
         return $mergeCells;
diff --git a/module/story/tao.php b/module/story/tao.php
index 1dd4793e3d..24908dd7e2 100644
--- a/module/story/tao.php
+++ b/module/story/tao.php
@@ -2220,26 +2220,15 @@ class storyTao extends storyModel
      * @access public
      * @return array
      */
-    public function getLeafNodes(array $stories, array $allStoryIdList): array
+    public function getLeafNodes(array $stories): array
     {
-        $parent    = array();
         $leafNodes = array();
-        $stmt      = $this->dao->select('id,parent,root,path,grade,product,pri,type,status,stage,title,estimate')->from(TABLE_STORY)->where('id')->in($allStoryIdList)->andWhere('deleted')->eq(0)->orderBy('type_desc,grade_desc,id_desc')->query();
-        while($story = $stmt->fetch())
-        {
-            $parent[$story->parent] = true;
-
-            if(isset($parent[$story->id])) continue;
-            $leafNodes[$story->root][$story->id] = $story;
-        }
-
-        $sortLeafNodes = array();
         foreach($stories as $story)
         {
-            if(isset($leafNodes[$story->root])) $sortLeafNodes += $leafNodes[$story->root];
+            if(empty($story->isParent)) $leafNodes[$story->id] = $story;
         }
 
-        return $sortLeafNodes;
+        return $leafNodes;
     }
 
     /**
@@ -2346,9 +2335,9 @@ class storyTao extends storyModel
             foreach(explode(',', trim($node->path, ',')) as $storyID)
             {
                 if(!isset($allStories[$storyID])) continue;
-                $story = $allStories[$storyID];
+                $story = clone $allStories[$storyID];
 
-                unset($allStories[$storyID]);
+                //unset($allStories[$storyID]);
                 if($storyType == 'requirement' && $story->type == 'epic') continue;
                 if($storyType == 'story' && ($story->type == 'requirement' || $story->type == 'epic')) continue;
                 if(!isset($storyGrade[$story->type][$story->grade])) continue;
diff --git a/module/story/test/model/gettracks.php b/module/story/test/model/gettracks.php
deleted file mode 100755
index be15d33fff..0000000000
--- a/module/story/test/model/gettracks.php
+++ /dev/null
@@ -1,88 +0,0 @@
-#!/usr/bin/env php
-<?php
-
-/**
-
-title=测试 storyModel->getTracks();
-cid=0
-
-- 执行storyModel模块的getTracks方法，参数是0, '', 0, $pager  @0
-- 执行$tracks[1]->track[11] @1
-- 执行$tracks[1]->track[11] @1
-- 执行$tracks[1]->track[11] @1
-- 执行storyModel模块的getTracks方法，参数是1, 0, 1, $pager  @0
-- 执行$tracks['noRequirement'][20] @1
-- 执行$tracks['noRequirement'][11] @1
-- 执行$tracks['noRequirement'][11] @1
-
-*/
-include dirname(__FILE__, 5) . '/test/lib/init.php';
-
-zenData('product')->gen(2);
-$story = zenData('story');
-$story->product->range(1);
-$story->parent->range('0{18},`-1`,19');
-$story->type->range('requirement{10},story{10}');
-$story->gen(20);
-
-$projectstory = zenData('projectstory');
-$projectstory->project->range(1);
-$projectstory->product->range(1);
-$projectstory->story->range('1-18');
-$projectstory->gen(18);
-
-$case = zenData('case');
-$case->story->range(11);
-$case->gen(5);
-
-$bug = zenData('bug');
-$bug->story->range(11);
-$bug->gen(5);
-
-$task = zenData('task');
-$task->story->range('11{8},19{2}');
-$task->parent->range('0{8},`-1`,9');
-$task->gen(10);
-
-$design = zenData('design');
-$design->story->range(11);
-$design->gen(10);
-
-$relation = zenData('relation');
-$relation->product->range(1);
-$relation->AID->range('1,11,1,2,12,2,3,13,3,4,14,4,5,15,5,6,16,6,7,17,7,8,18,8');
-$relation->BID->range('11,1,1,12,2,2,13,3,3,14,4,4,15,5,5,16,6,6,17,7,7,18,8,8');
-$relation->AType->range('requirement,story,design');
-$relation->BType->range('story,requirement,commit');
-$relation->relation->range('subdivideinto,subdividedfrom,completedin');
-$relation->gen(24);
-
-zenData('repohistory')->gen(10);
-
-global $tester;
-$storyModel = $tester->loadModel('story');
-
-$storyModel->config->URAndSR = 1;
-$storyModel->app->loadClass('pager', $static = true);
-$storyModel->app->moduleName = 'product';
-$storyModel->app->methodName = 'track';
-$pager = new pager(0, 20, 1);
-
-r($storyModel->getTracks(0, '', 0, $pager)) && p() && e('0');
-$tracks = $storyModel->getTracks(1, '', 0, $pager);
-r(isset($tracks[1]->track[11])) && p() && e('1');
-$tracks = $storyModel->getTracks(1, '', 1, $pager);
-r(isset($tracks[1]->track[11])) && p() && e('1');
-$tracks = $storyModel->getTracks(1, 0,  1, $pager);
-r(isset($tracks[1]->track[11])) && p() && e('1');
-
-$pager = new pager(0, 20, 2);
-r($storyModel->getTracks(1, 0,  1, $pager)) && p() && e('0');
-$tracks = $storyModel->getTracks(1, 0,  0, $pager);
-r(isset($tracks['noRequirement'][20])) && p() && e('1');
-
-$tester->config->URAndSR = 0;
-$tracks = $storyModel->getTracks(1, '', 1, $pager);
-r(isset($tracks['noRequirement'][11])) && p() && e('1');
-$tracks = $storyModel->getTracks(1, 0,  1, $pager);
-r(isset($tracks['noRequirement'][11])) && p() && e('1');
diff --git a/module/story/test/tao/getlastnodes.php b/module/story/test/tao/getlastnodes.php
old mode 100644
new mode 100755
index e39ba62f82..063203709e
--- a/module/story/test/tao/getlastnodes.php
+++ b/module/story/test/tao/getlastnodes.php
@@ -4,12 +4,11 @@
 /**
 
 title=测试 storyModel->getLeafNodes();
+timeout=0
 cid=0
 
 - 传入空参数。 @0
-- 只传入 allStoryIdList @0
-- 只传入 stories @0
-- 执行story模块的getLeafNodes方法，参数是$stories, $allStoryIdList  @11;10;9;8;7;6;5;4
+- 执行story模块的getLeafNodes方法，参数是$stories  @11;10;9;8;7;6;5;4
 
 */
 include dirname(__FILE__, 5) . '/test/lib/init.php';
@@ -19,6 +18,7 @@ $story->product->range('1');
 $story->root->range('1{10},11');
 $story->grade->range('1,2{3},3{6},1');
 $story->parent->range('0,1{3},2{3},3{3},0');
+$story->isParent->range('1{3},0,0{3},0{3},0');
 $story->type->range('epic,requirement{3},story{6},epic');
 $story->gen(11);
 
@@ -27,11 +27,7 @@ su('admin');
 global $tester;
 $tester->loadModel('story');
 
-$allStoryIdList = array(1,2,3,4,5,6,7,8,9,10,11);
-$stories        = $tester->story->dao->select('*')->from(TABLE_STORY)->where('id')->in('1,11')->orderBy('id_desc')->fetchAll('id');
+$stories = $tester->story->dao->select('*')->from(TABLE_STORY)->orderBy('id_desc')->fetchAll('id');
 
-r(count($tester->story->getLeafNodes(array(), array())))         && p() && e('0');  //传入空参数。
-r(count($tester->story->getLeafNodes(array(), $allStoryIdList))) && p() && e('0');  //只传入 allStoryIdList
-r(count($tester->story->getLeafNodes($stories, array())))        && p() && e('0');  //只传入 stories
-
-r(implode(';', array_keys($tester->story->getLeafNodes($stories, $allStoryIdList)))) && p() && e('11;10;9;8;7;6;5;4');
+r(count($tester->story->getLeafNodes(array())))         && p() && e('0');  //传入空参数。
+r(implode(';', array_keys($tester->story->getLeafNodes($stories)))) && p() && e('11;10;9;8;7;6;5;4');
\ No newline at end of file