Export CDR to Adobe Illustrator

CorelDRAW Help : File formats : Supported file formats : Adobe Illustrator (AI)

To export an Adobe Illustrator file
1 . Click File Export.
2 . Locate the folder in which you want to save the file.
3 . Choose AI - Adobe Illustrator from the Save as type list box.

When I want to export a CDR file as an AI, there is no option 3. "Choose AI - Adobe Illustrator from the Save as type list box."

AI is not listed in the list. Although in Tools/Options/Global/Filters/List of active filters: AI is in the list