360: Appending to piano scores converted from Finale

A piano stave in a score converted from Finale does not have the properties of a Grand Staff in Sibelius. Therefore, if you append a piano score created in Sibelius, it takes the attributes of the converted score. If it contains some cross-staff beaming, this will be lost. The solution is to add a real Piano instrument to the converted Finale file and copy the music from the existing piano staves into them, then delete the original staves. The score should then append successfully.