Export status is displayed on the data grid via an icon to the left of the route number. The colors of the icon represent different export statuses that should be paid attention to. The status can also be understood by hovering over the export status icon. 

Grey represents a route that has yet to be exported. It’s only grey if the route is unassigned.
Orange represents a route that is preassigned but not exported.
Green represents a route that has been exported.
Red represents a route that has been previously exported and changed, so it needs to be reexported.