To copy Start and Stop Time editing done with the MIDI tool
Choose Window > Advanced Tools. Click the MIDI tool . The MIDI tool menu appears. Make sure Note Durations is selected in the menu.
Select the region in which you edited Start and Stop Times.
Drag the first source measure so that it’s superimposed on the first target measure. If the first target measure is not on-screen, scroll until you see it. Then, while pressing CTRL and shift simultaneously, click the first target measure.
In either case, the Copy MIDI Data dialog box appears. (This dialog box does not appear if you copy to the same measure in a different staff).
Type the number of times you want to copy the material (horizontally). Click OK. The Start and Stop times are copied onto the notes which fall on the same rhythmic location as source notes.