Xara X5 has an import of: Adobe Illustrator [*.ai, *.eps]
Photoshop CS4 can Export Paths to Illustrator as .ai

Why can't Xara Import the .ai file?

Workaround Found here
Import ai into Xara: http://www.talkgraphics.com/showthread.php?t=36226

I realize the Import is not: "Photoshop Paths to Illustrator[*.ai]"
But why the F would Adobe make two different codes for the same type of file?