You can list different versions of the same drawing, show their snapshots, and change the current drawing version. You can list drawing versions in other models, and deleted drawing versions that are no longer available in Document manager. You can also open a deleted GA drawing as a new drawing.
Listing drawing versions is useful when you want to revert to an older version of the drawing for some reason. In Tekla Model Sharing , you can control unintentional changes made to drawings and revert to the version that has the correct content.
Every time you save a drawing, a new version of the drawing is saved.
The advanced option XS_DELETE_UNNECESSARY_DG_FILES deletes the dg files older than seven days, which is the default value for the advanced option XS_DELETE_UNNECESSARY_DG_FILES_SAFETY_PERIOD.