Directory path when calling Windows App from Mac

Hi,

if a Windows app is started by double clicking a document in Mac's Finder, the document is passed to the Windows app using a UNC path, although Parallels also has mapped a drive letter to the shared part of the file system. There are some apps that do not like UNC paths, e.g. cmd.exe only accepts them as current directory after a registry patch.

So instead of passing \\mac\Home\... to the associated app, why not pass Z:\... if it is available?