Beam doesn't break after pasting
1. Open attached score.
2. Drag-select everything, excluding the rests in the anacrusis.
4. Create 4/4 piano score with 1/4 anacrusis.
5. Select the rest in treble stave of the anacrusis.
Result: Beam doesn't break in the first two notes in the treble clef, whilst a quaver rest isn't produced in the treble staff of the anacrusis.
Using MuseScore 2.0 Nightly Build (5403) - Mac 10.6.8.