Your JYM transcript for your year or semester with the program is kept permanently on record by the Office of the Registrar at Wayne State University.
If you attended JYM since 2002 you can order an official electronic copy online. If you attended prior to 2002, you must fill out a form which can be scanned/emailed or faxed. Be sure to check the "Junior Year in Munich" box and indicate your year/semester of participation.
Here is a link to the information and instructions: http://reg.wayne.edu/students/transcript.php