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An easier way to do that is to go to Track Edit/Copy Measure (or Repeat Measure), select the measures you want to copy and enable All Tracks.

As for the volumes, I'm not sure if there's a way to erase the saved values without re-recording. They're likely saved on the first measure.

You can sequence certain measures. Just go to Play->Loop, select the looped measures, and go to the grid sequencer.