只修道路交叉遮挡顺序

提示词

根据标高资料只修正选定交叉处的上下遮挡，桥面、下穿路和连接关系按参考，其他路网不动，不把修图变成新增平交口。

Correct only the over-under occlusion at the selected crossing from elevation information, retaining referenced bridge, underpass, and connections and leaving the rest of the network untouched.