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Synchronizing time displays of nested compositions


    When you open windows associated with a composition, such as the Timeline, the Layer, and the Effect Controls windows, changing the current time in one window updates the other windows associated with that composition. However, changing the current time in one composition does not change the current time in windows belonging to other compositions, unless you are working with nested compositions.

    You can synchronize the current-time markers in open windows belonging to a nested composition. After Effects provides a preference that updates all windows of nested compositions when you move the current-time marker in any nested composition.

To synchronize time displays in windows of nested compositions:

    Choose Edit > Preferences > General, click the Synchronize Time of All Related Items option to add a checkmark, and click OK.