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Problem: Converting a coverage route system to PolylineM shapefile creates too many vertices, parts

Description

Converting a coverage route system to PolyLineM shapefile can create duplicated vertices or extra parts.

Cause

The ArcCatalog/ArcToolbox coverage to shapefile conversion tools use the ArcInfo Workstation defined layers LAYEREXPORT command to create a shapefile. This code has not been optimized to reduce the number of vertices and parts.

Solution or Workaround

Use ArcMap to export a coverage route system to shapefile. ArcMap uses the FeatureDataConvertor object behind the scenes. This object has code that has been optimized to reduce the number of vertices and parts.