• If you change the tempo by editing the Master Track, the positions of Events on time locked Tracks are recalculated, so that they stay on the same time position. When you examine these Tracks in for example Key Edit, the Events will appear to have moved, meter-wise.
• When you change the tempo, the Parts are also lengthened and shortened bar-wise, as needed to accommodate the Events. The Events' positions are also recalculated when you move the Part.
• If you have a lot of Tempo changes and a lot of Events in the Time locked Tracks, moving parts, inserting new tempi or changing existing ones may lead to noticeable recalculation times.