When a model changes, the related drawings need to be updated. Tekla Structures takes care of updating and notifies you if updating is needed.
When you start using a newer version of Tekla Structures , updating drawings created with the older version may cause problems. We recommend that you complete any drawings you have started using the older version, or recreate the drawings using your new version of Tekla Structures.
You need to update drawings when:
The geometry of a model object changes.
Some other model object properties, for example, material and class change.
Model objects are added or deleted.
The number of identical model objects changes.
Tekla Structures automatically updates drawings each time you number the model. If you have not numbered the model, you are prompted to do so when you create a drawing. Furthermore, if you have changed the model and go to the Drawing list to open drawings, Tekla Structures has marked the outdated drawings, and you need to update them before you can open them.
General arrangement drawings are always updated when you open them if the model has changed. You do not need to number the model to update general arrangement drawings.
Click the following links to find out more about drawing update, when recreation is needed, and how the drawings are numbered: