[Trunk] Part doesn't include spacer
1. Create score.
2. Apply spacer to the first bar.
3. Open 'Parts'.
4. Create part for the instrument the spacer was applied to.
5. 'Create Part'.
7. Open the part.
Result: The spacer isn't in the part.
Using MuseScore 2.0 Nightly Build (4837) - Mac 10.6.8.