"Swing" Tempo not played back on new instruments added to score.

1. Create a score with at least one instrument and add the "swing" tempo marking from the palettes menu.
2. Add a new instrument to the score.
3. Any notes played on this new instrument will not be played swung, but will on the original instruments.

Deleting and re-adding the swing tempo marking fixes the problem.

Was able to re-create the problem on a couple of scores using various instruments all created originally in MS4.