Select the source track in it's entirety.
Select EDIT | Select | By Filter.
Select none and then select "Control" and hit ok. Then only the controller events will be selected. Here you may need to narrow the selected to just CC64 - sustain)
Hit F7 (To more the now marker to the first selected controller event)
CTRL - C to copy the controller events.
CTRL - V to do the paste to the destination track
Hope that helps