If the intersection definition is out-of-date, is displayed next to the intersection in the Prospector tree. This indicates that the corridor regions in the intersection need to be updated. You can update corridor regions in an intersection manually, or you can specify that the intersection object update corridor regions automatically.
When you update corridor regions in an intersection, any manual edits that were made to the regions or targets within the intersection corridor are lost.
When the Update Regions and Rebuild Corridor command is invoked, the corridor region stations in the intersection are updated in order to stay in synchronization with the intersection area geometry. The corridor properties are updated to reflect these new region station values.