https://community.esri.com/thread/196650 Yes, centerline feature class does not store measure values. Centerline feature class is a polyline feature class that stores the route geometry. This centerline geometry, along with route definitions, are stored in a network feature class which is polyline M enabled. Calibration point feature class stores the route measure values. For in-depth understanding on data model please refer - http://desktop.arcgis.com/en/arcmap/latest/extensions/pipeline-referencing/alrs-data-model.htm#ESRI_SECTION1_0D9777E32B084B3AB43A96F96B92F68A
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