You can use CAL for this...
If you want to change all events in the clip/track to channel 10:
(do
(forEachEvent
(= Event.Chan 9)
)
)
If you only want events at channel 1 to be changed to channel 10:
(do
(if (== Event.Chan 0)
(do
(= Event.Chan 9)
)
)
)