IFC export: The custom properties now work in the same way as regular properties in the IFC export. If no value is found for a custom property in the export, the export does not write the property at all. To avoid this, add optional=true for that custom property in the property set.

Assembly UDAs in IFC4 export: Previously, IFC4 export always used the UDA value from the main part of the assembly if the assembly did not have it defined. Now, you can disable this functionality using the advanced option XSR_DISABLE_ASSEMBLY_UDA_INHERITANCE. If you set the advanced option to TRUE, and if UDA is not set on the assembly level, the UDA is left empty or it uses the assembly level's default value. If you set it to FALSE, the UDA is inherited from the main part.

IFC export: Sometimes parts were exported longer than they are. This issue has now been fixed.

Reference model positioning: Previously, if an IFC2x3 reference model contained extensive information before the schema definition at the beginning of the file, the IFC schema detection would fail during the reference model insertion. This resulted in the incorrect positioning of the IFC2x3 reference model. This issue has now been resolved.

When you accidentally used a border line when trimming a polygon, Tekla Structures stopped responding. This issue has now been fixed.

Tekla Model Sharing: Previously, reading in or writing out could fail in Windows 10 if a profile or a material name matched a Windows reserved name. This has now been fixed for newly created packages.

Clash check manager: Previously, clashes were not detected between CHS profiles in some cases. This issue has now been fixed.

Previously, edges for CIP parts were not visible when the advanced options XS_DO_NOT_CLIP_NATIVE_OBJECTS_WITH_CLIP_PLANE and XS_ENABLE_POUR_MANAGEMENT were set to TRUE. Now, the CIP part edges are visible, as they should.

In Trimble Connector, on the Overlay models tab, only the latest version of each model was shown. This has now been fixed, and the list of versions is fetched when a model is selected. 

Previously, failures in loading extensions could prevent other functionality in Tekla Structures. Now the failures in extensions are more isolated.

Previously, the center line of polybeams with segments at 180 degrees was calculated incorrectly. This has now been fixed.

Trimble Connect: Previously, when you started Trimble Connect collaboration, the list of projects was sometimes empty. Now the reporting of failures when the list of projects is fetched has been improved.

The stability of Tekla Structures when working with lofted plates has been improved.