https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/174734/inroads-triangulation---deleted-trianglesHi, I had copied a portion of surface containing features to a new surface. When i triangulate the clipped surface there are only less triangles visible. Around thousands of triangles are shown in &quot;deleted triangle&quot; column in the surface contents. Whereen-USTelligent Community 12https://communities.bentley.com/thread/505663?ContentTypeID=1Wed, 13 Feb 2019 15:42:29 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:efb8bafb-4e73-42dd-b842-91a52becb974Ramanan R V<p>Thanks Mr.Blake. I doubt if i could upload the DTM as they are heavy files and property of the firm am in. I am sorry for the blunt response. Can you please help with the possible causes. I had never seen Deleted triangles in the column unless i manually edit the surface triangulation</p><div style="clear:both;"></div>https://communities.bentley.com/thread/504859?ContentTypeID=1Thu, 07 Feb 2019 19:18:31 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:0b818753-c7ab-4872-bf29-f3e434bbc999Marcus Blake<p>Please provide 9 digit&nbsp;version number (08.11.xx.xxx), detailed workflow to reproduce the issue, and upload data set here <a href="https://bentley.sharefile.com/r-r59ed63e269342e1a">https://bentley.sharefile.com/r-r59ed63e269342e1a&nbsp;</a></p> <p>and i&#39;ll take a look.</p><div style="clear:both;"></div>