Hatch, cross hatch or pattern hatches do not show in Presentation mode (True Hidden Line).Product: MicroStation V8 2004 EditionVersion: 08.05.01.25Area: Reference
If Associative hatches are placed in the reference file, they will not display when presentation mode is set.Most common scenario:-Switch to or create a Sheet model.-A building elevation is attached as reference.-Build walls contain Associative Patterns that represent the walltexture.-Reference presentation is set to "true Hidden Line".This scenario is most commonly seen in Architectural or StructuralElevations.Possible Solutions:-Use Non Associative hatch instead of associative hatches.-Apply the Hatches in the Sheet after the Presentation mode is set.
http://communities.bentley.com/other/old_site_member_blogs/peer_blogs/b/marc_thomass_blog/archive/2013/03/07/hatching-101