It seems enormously complex to me to preserve smtpe position of events, when inserting or changing a tempo earlier in the song than these events. This is something I find myself having to do often in film scoring, and I can't understand why Logic has not enabled a tempo lock option. The most reliable way presently is to make a change earlier, and then return to the later section you are wanting to preserve and enable Logic to automatically adjust a newly inserted tempo event before this. But you end up with bars of ridiculously fast or slow tempos. Plus it's time consuming and risky, and can be difficult to properly plan. It seems to me that if the tempo list allowed a tempo to be locked, then any regions in the arrange that are also locked will not only preserve their correct tempo, but they will also remain in the correct bar/beat position (if you lock regions and then change tempos, your midi ends up in places that bear no relation to the beat of the bar). There must be loads of people who have this issue...? Or am I missing something? Thanks Mac Pro Intel 2x2.66 Ghz, 6Gb RAM, Logic Pro 9, Focusrite Saffire Le Audio Interface.