具体操作有如下几个步骤：
一、首先在手机桌面打开“千牛”App。
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二、在“工作台”界面中“我的应用”，找到“交易管理”并点击进入。
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三、在“首页”点击“已发货”。
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四、找到需要进行修改的订单，点击“修改物流”进入。
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五、在“修改物流”页面下方点击“修改物流”。
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六、选择需要修改的“快递公司”以及填写“快递单号”后就完成了对订单物流的修改。
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