This is interesting from MS KB:
The Create Shortcut command truncates the source path folder names to eight characters
Thanks for the link. That confirmes (now correct) my experience!
... and a strange work-around for .vbs using 'Subst j: c:\' to make a non-existent drive 'j:\' exist temporarily.
I also use this workaround. But there is a time bomb: What happens, if your local system already has the (sample) drive j: with different contents? I couldn't find a solution right now.
Answer see inside your post.