Before bouncing, it is best to define the range of the project that you want to bounce.
The default values for the Start and End position fields in the Bounce window encompass the entire Logic Pro project if no regions are selected, or if the Cycle function is inactive.
If the Cycle function is engaged, the bounce start and end positions match the locator positions.
If a selection (of one or more regions) is made in the Arrange window, the bounce start and end positions match the selected area.
Note: You can manually set the bounce start and end positions by changing the Start and End parameters in the Bounce window, if none of the options above are appropriate.