In Maestro 3.3.4 and above, users can import Adobe Audition WAV files including the information found in the Wav Properties - Cart tab. When doing a File - Save As in Adobe Audition, there is a check box at the bottom of the Save As window that says "Save extra non-audio information." If the information is not imported into the Maestro cart they may have neglected to put a check mark in that box.