MusicXML Chord Names

I have a very simple single staff, 4 bar score with Lyrics and chord Names.
If I save it as a Notion file it reads back in correctly.
If I export it as a MusicXML file, it imports correctly, except all the Chord Names are missing.
?????
Thanks.
Jerry...
If I save it as a Notion file it reads back in correctly.
If I export it as a MusicXML file, it imports correctly, except all the Chord Names are missing.
?????
Thanks.
Jerry...