mc.mixdown spreadinclusive message bug

hello ,

Could you kindly fix this issue. the spreadinclusive message only works with mc.stereo~ not mc.mixdown.
The obvious advantage of mc.mixdown being that you could spread your say 10 channels down to any smaller n channels. That would be super effiecient and great. I was hoping it would have been out with 8.1.4.

If possible, please confirm the reception of this request.
That way I know this is not a message in a bottle at sea.

endless thanks

phiol