PCB flip options are not working

Hello, I am recently started using Fritzing app this is really nice and easy however Horizontal and vertical flip options are disabled in Parts menu and also there is no option to flip the entire PCB before exporting to gerber files. while creating gerber files if there is an option like Mirror solder side then it will be good. Please let me know how can I enable the flip options in the Part menu tab.

If you export to production PDF or SVG for home etching, Fritzing will also generate mirrored versions.

Gerber export doesn’t have this option, usually this is decided later in the process. For example, gerbv has an option to display a mirrored Gerber file.