Reordering instruments in the tracker (which is required to change sync track order, which in turn can be necessary when having "connected" syncs like vec4) proved to be quite painful, because the notes are immediately assigned to different (wrong) instruments and you have to be super careful to get the original track->instrument assignments correctly again (by drag-reordering tracks as well) after such an operation.

Would it be possible to decouple the two reordering operations entirely?

(if this behavior is a size optimization to avoid saving the track order in the assembly export - could we add a "lock tracks and instruments" button that is only available when it makes sense (when all tracks for a specific instrument are adjacent), that allows to simultaneously reorder tracks and instruments?)