Arranging : Time, Tempo, Meter, Key, and Chords : Identify Beat Command : Dragging Bar|Beat Markers

Dragging Bar|Beat Markers
Bar|Beat Markers can be dragged to new locations so they can align with audio clips that have been moved, or so that they can align to a slightly different point within an audio clip. This results in neighboring MIDI data being adjusted to align with the new tempo map.
Because Bar|Beat Markers are sample-based and tempo events are tick-based, they behave differently when you drag them in the Tempo ruler.
When dragging a Bar|Beat Marker:
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Its BPM value is recalculated along with the Bar|Beat Marker to its immediate left. Bar|Beat Markers to the right of the dragged marker remain unchanged.
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Its bar and beat location is dragged with the Bar|Beat Marker. If the Bar|Beat Marker was originally placed at 3|1|000, it remains there (unless it is edited).
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Its sample and SMPTE locations change, as calculated for by the new tempo for the Bar|Beat Marker.
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Neighboring MIDI events, along with the Bars|Beats ruler, shrink or expand as necessary to adjust for the new tempo.
 
When dragging a tempo event:
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The tempo event is placed at a new bar and beat location. The sample and SMPTE locations for the event are updated as well.
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The BPM value for the dragged tempo event remains constant, as do any other tempo events in the session.
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Neighboring MIDI events and audio clips on tick-based tracks, along with the ruler, shrink or expand as necessary to adjust for the new tempo location.