Maps containing dashed or dotted lines do not print or export correctly from ArcMap; the lines display correctly in ArcMap.
Lines created with multiple layer symbology encounter a problem due to a difference in resolution of the screen display and the output. This is a known issue.
Note: The content in this article pertains to retired ArcGIS versions 9.x. Later versions of ArcGIS may contain different functionality, as well as different names and locations for menus, commands and geoprocessing tools.
Use the following workaround:
Note: Offsetting the multiple layer symbology by this slight amount forces ArcMap to use a different code for interpreting and outputting the symbology, which eliminates the problem.