Problem: Transparent layers disappear when printing or exporting from ArcMap
Transparent layers disappear when printing or exporting a map from ArcGIS ArcMap 8.2.
Transparency has been set on a polygon that is included in a Group Layer.
Solution or Workaround
This is a known issue with ArcGIS 8.2.
Currently the only known workaround is to move all transparent layers out of the Group Layer and into the parent layer.