I'm using Finale 2008, Full GPO and K2. When I load in the second trombone player (notation KS instrument), the key switch for standard loads in correctly--the low C. Mute loads in correctly as the low D.

However, after working on a score for a while, and after many playbacks, I find that the keyswitch for standard shifts to the low C#.

I cannot (yet) find a pattern of what action causes this to happen.

My only recourse at this moment is to save, quit finale, re-start finale and load in my score.

This only happens to trombone player 2. Trombone player 1 is fine.

Is anyone else having this problem? Does anyone know of a fix?