1. 【新增】售后单售后原因类型支持搜索

2. 【新增】手工创建订单折扣可输入正数

3. 【优化】盘点申请单确认

4. 【修复】采购退货单模拟出库失败问题

5. 【新增】订单金额客户实付与结算金额

6. 【优化】仓库发货统计报表物料名称显示

7. 【优化】自有仓储虚拟发货逻辑

8. 【修复】基础物料分类管理问题

app/monitor/controller/admin/setting.php

@@ -32,7 +32,15 @@ class monitor_ctl_admin_setting extends desktop_controller
     {
         $this->begin();
 
-        app::get('monitor')->setConf('email.config', $_POST['email']);
+        $emailConfig = (array) app::get('monitor')->getConf('email.config');
+        $emailPost = isset($_POST['email']) && is_array($_POST['email']) ? $_POST['email'] : array();
+
+        // 密码未提交或提交为空字符串时保留历史值，避免误清空（如字符串"0"被empty误判）
+        if ($emailPost && (!array_key_exists('smtppasswd', $emailPost) || $emailPost['smtppasswd'] === '') && !empty($emailConfig['smtppasswd'])) {
+            $emailPost['smtppasswd'] = $emailConfig['smtppasswd'];
+        }
+
+        app::get('monitor')->setConf('email.config', $emailPost);
 
         app::get('monitor')->setConf('workwx.config', $_POST['workwx']);