Because QMidi saves sync information in the text file resource fork, you can store them only on HFS/APFS (Mac) formatted volumes.
To preserve the
resource fork, zip your file before transferring them via another file system, or by mail...
See QMidi Help (Help menu > QMidi Help) > Media > Management
also online at
http://www.mixagesoftware.com/en/qmidi/qmidi_help.html
Mixage Software
www.mixagesoftware.com
support@mixagesoftware.com