Answer:
In the detail settings for the DSTV interface, you can specify that the cross-sections of the L and Z type are mirrored: Menu "File" → "Import", tab DSTV Interface (*.stp)
Unselect the check box (see the image).
In the detail settings for the DSTV interface, you can specify that the cross-sections of the L and Z type are mirrored: Menu "File" → "Import", tab DSTV Interface (*.stp)
Unselect the check box (see the image).