[Trunk] Copying note from beam with altered properties pastes beam-like

1. Open score .
2. Drag-select semiquaver and rest.
3. Copy.
4. Select next bar.
5. Paste.

Expected result: Note pastes with an unbeamed flag.
Actual result: Note pastes with a beam-like flag.

Using MuseScore 2.0 Nightly Build (4683) - Mac 10.6.8.