https://community.esri.com/t5/arcgis-pro-questions/migrating-from-2d-data-to3d/m-p/1684969#M101952 <P>Hello,</P><P>I am currently working on migrating a few 2D feature classes to become 3D Z and M enabled. I have found a simple workflow for Point features but have run into an issue with Lines and Polygons.&nbsp;</P><P>&nbsp;</P><P>Once the feature class is Z and M enabled, I used the "Update Z" geoprocessing tool on the desired feature as the&nbsp;<STRONG>Input Feature&nbsp;</STRONG>and a TIN layer for the&nbsp;<STRONG>Input Surface</STRONG>. This process runs without issue and assigns the TIN elevations to the many vertices on every line. While this is great, the majority of these line features are underground and the TIN elevations are on the surface. I was wondering if there is an easy workflow out there to have all of the vertices elevations subtract ~3ft. I've looked into the&nbsp;<STRONG>Edit Vertices</STRONG>&nbsp;editing tool which allows you to select multiple vertices on a single line and change their elevation. This process would take forever with the amount of line features and since the ground elevation from the TIN is NOT the same set elevation, this process is not acceptable. Maybe there is some sort of script that can adjust all the existing Z values of all the line features to be subtracted by a set number?&nbsp;</P><P>&nbsp;</P><P>Any information would be greatly appreciated. Cheers!&nbsp;</P> Wed, 18 Feb 2026 17:05:36 GMT DavidNuhn 2026-02-18T17:05:36Z https://community.esri.com/t5/arcgis-pro-questions/migrating-from-2d-data-to3d/m-p/1684969#M101952 <P>Hello,</P><P>I am currently working on migrating a few 2D feature classes to become 3D Z and M enabled. I have found a simple workflow for Point features but have run into an issue with Lines and Polygons.&nbsp;</P><P>&nbsp;</P><P>Once the feature class is Z and M enabled, I used the "Update Z" geoprocessing tool on the desired feature as the&nbsp;<STRONG>Input Feature&nbsp;</STRONG>and a TIN layer for the&nbsp;<STRONG>Input Surface</STRONG>. This process runs without issue and assigns the TIN elevations to the many vertices on every line. While this is great, the majority of these line features are underground and the TIN elevations are on the surface. I was wondering if there is an easy workflow out there to have all of the vertices elevations subtract ~3ft. I've looked into the&nbsp;<STRONG>Edit Vertices</STRONG>&nbsp;editing tool which allows you to select multiple vertices on a single line and change their elevation. This process would take forever with the amount of line features and since the ground elevation from the TIN is NOT the same set elevation, this process is not acceptable. Maybe there is some sort of script that can adjust all the existing Z values of all the line features to be subtracted by a set number?&nbsp;</P><P>&nbsp;</P><P>Any information would be greatly appreciated. Cheers!&nbsp;</P> Wed, 18 Feb 2026 17:05:36 GMT https://community.esri.com/t5/arcgis-pro-questions/migrating-from-2d-data-to3d/m-p/1684969#M101952 DavidNuhn 2026-02-18T17:05:36Z https://community.esri.com/t5/arcgis-pro-questions/migrating-from-2d-data-to3d/m-p/1684981#M101953 <P><A href="https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/adjust-3d-z.htm" target="_blank">Adjust 3D Z (Data Management)—ArcGIS Pro | Documentation</A></P><P>Adjust Z Value with a finite amount</P> Wed, 18 Feb 2026 17:30:23 GMT https://community.esri.com/t5/arcgis-pro-questions/migrating-from-2d-data-to3d/m-p/1684981#M101953 DanPatterson 2026-02-18T17:30:23Z https://community.esri.com/t5/arcgis-pro-questions/migrating-from-2d-data-to3d/m-p/1684990#M101954 <P>Dan, thanks! works like a charm. I appreciate it.</P> Wed, 18 Feb 2026 18:02:33 GMT https://community.esri.com/t5/arcgis-pro-questions/migrating-from-2d-data-to3d/m-p/1684990#M101954 DavidNuhn 2026-02-18T18:02:33Z