musescore/MuseScore — pull request #1144 by MarcSabatella (2014-08-16 17:18:45+00:00)
Title: fix #28401: transpose chords appropriately in parts

Implemented without introducing TPC1/TPC2 mechanism for harmony objects (that could always come later). Instead, I am just making sure to transpose chords in linked staves when editing and when copying/pasting.