Freeze track/Save/Reopen & Play Problem . . .

1. I arrange a song with the plan to add a "Real" soloist.
2. I add "Mute" and "Back to Normal" commands to certain measures.
3. I generate a Real soloist part. It generates and plays as expected according to the "Mute" and "Back to Normal" @ X measure commands.
4. I keep regenerating until satisfied with the result. AOK to this point.
5. I "Freeze" the soloist part. Still AOK.
6. I save the song.
7. When the song is reopened and played, the "Mute" commands are ignored. The soloist plays through the entire song.

Haven't tried it yet, but presume this problem would happen on any "Real" track.
Perhaps it's the Snowflake icon . . . you know, no two flakes are the same.

Can someone please confirm (not that two flakes are never the same)?