[MonkeyBars]

When you change the send dropdown, the destination dropdown does now update, but the logic is incorrect. It appears to be a simple case of the math calculating the multichannel options based on stereo pairs rather than multigroupings.

Steps to reproduce:

1. Make 2 tracks. Increase track A channel count to 64 and track B to 48.
2. Create a send from track A channels 1-48 to track B.

Expected behavior:
Destination dropdown autopopulates with

1-48
1
...
48
(New ch on receiving track)
  2-49
  ...
  49-96
  49
  ...
  96

Actual behavior:

1-48
...
47-94
1
...
48
(New ch on receiving track)
  49-96
  50-97
  51-98
  49
  50
  51
  52

I expect to get additional destination options equal to the number of channels in the source dropdown, but that's a bit of a judgement call. Regardless the current behavior is clearly illogical.