When creating Route feature class from a regular polyline feature class by using Create route tool, users have to be careful about the optional parameter called "Coordinate Priority". If users leave that option at default, the direction of the route created may be different from the original polyline feature class, which depends on the geometry of the polyline. That means the From and To points of the polyline may be reversed. Users will notify it when they add arrow or hatching to the polyline. If the route is reversed, it will be easier to rerun the Create Route tool than Flip Line tool since that tool only reverse the direction of the route not the measure value of the route. Users have to enter Editing session to reverse it. In order to preserve the direction of the original polyline feature class, users have to make sure the starting point of the polyline is closest to the appropriate minimum bounding rectangle's corner.
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