Recently I had to reinstall my Mac. One of the things I wanted to save was my virtual machine. Turns out VMWare Fusion doesn't have any kind of export functionality directly within the application.
What I found though was a command line tool with which you can export your virtual machine as a OVF file:
$ cd /Applications/VMware\ Fusion.app/Contents/Library/VMware\ OVF\ Tool/ $ ./ovftool --acceptAllEulas ~/path/to/your/virtual-drive.vmx ~/path/to/your/destination.ova
The import works with the import menu1 within VMWare Fusion. This should even work over major version changes (tested it with the switch from version 6 to 7).
Found under File -> Import... ↩