The hide overlapping borders plug-in feature can be used to hide overlapping borders between groups or components in SketchUp at one time.
Hide Overlapping（Hide Overlapping）
Select all groups or components that need to be processed. After setting the options, the overlapping edges between groups or components will be hidden after executing the command.
可以正常使用，注意是针对群组或组件之间重叠的边线