Hi Stein, and welcome to the board!
I apologize for the edit, but part of the command string was outside what is normally allowed out in the open area. The reason is that a non-tech employee could really damage a system trying to run things from a command line.
The bad news is that as you found that file does not play well with wildcards. The good news is that with an IT background you can understand what I'm about to share and create a custom batch pretty easily. Again we stay pretty generic in the public areas, but if you'll take the folder with all your files, go out to the CLI, run a directory listing, copy that to your text editor, save the file, then open it using some delimiters in Excel, you'll quickly see how easily you can turn that into a custom script that you can in turn put back into a text editor and create your batch.
Makes sense?

If not, post back and I'll get with you privately.