Hello Jllort
I found that I should have called the icon internet-shortcut.gif and not url.gif in my example above.
This worked in that my .url files import into OpenKM OK, but the shortcuts don't open. Not to worry I will create a html page of links instead.
(What I was trying to do was store shortcuts to webpages in our documentation. If on Windows you right click on the desktop and go new shortcut and put a webpage url in the location and a name in the title its a useful way or storing individual links. I have attached one as an example).
Thanks
Al