Dashed lines created in ArcMap using the SimpleLine symbol or the Cartographic line symbol print as solid lines.

Description

In ArcGIS Pro, overlapping polygon boundaries sharing same edges with the dash symbol effect may display, print, or export as solid lines. The image below is an example of the dashed polygon boundaries sharing the same edges and displaying as solid lines in some areas.

Cause

This is known behavior of the polygon features topology. The dashed boundary symbology does not line up or look the same when the boundaries of adjacent polygons overlap or share the same edges.

Workaround

As a workaround, use one of the following options:

Synchronize the polygon boundaries symbology

Note:
The Set Control Point At Intersect tool requires the ArcGIS Pro Advanced license.

Use the Set Control Point At Intersect tool to create a control point at vertices shared by the polygon features. This tool synchronizes the boundary symbology of adjacent polygons; thus the dashed polygon boundaries do not display as solid lines. The image below shows the synchronized polygon boundaries with the dash symbol.

Convert the polygon features to line features

Note:
The Polygon To Line and Delete Identical tools require the ArcGIS Pro Advanced license.

Convert the polygon features to lines using the Polygon To Line tool, and remove duplicates using the Delete Identical tool. Symbolize the output line features with the dash symbol as much as necessary.

Note:
Optionally, configure the Dash effect property to customize the line ends effect of the dash symbol. In the Symbology pane of the layer, under the Properties tab, click Layers . Select the symbol layer to configure and expand Dash effect. For the At line ends property, select the desired option other than No constraint.

Steps to Reproduce