So it looks like I found an issue with Cubase 13 and VEP 7.3.3440 .
If you want to reproduce the issue , create :
2 active outputs on Cubase ( 1/2 and 3/4)
4 midi tracks (respectively channel 1 , 2 , 3 and 4 )
Assign midi tracks 1 and 2 to the active outputs 1/2
and midi tracks 3 and 4 to the active outputs 3/4
Put midi tracks 1 and 2 into a folder
Put midi tracks 3 and 4 into another folder
Close your session
and check the midi track 3 on the second folder , it’s assigned to 1/2 , it should be 3/4 .
I noticed it on every first midi tracks on my template session which are into a folder .
I didn’t have the issue on Cubase 12 .
The only way to restore a proper assignment is to take the midi tracks off the folders .
I’m on Mac OS X Monterey 12.7.0
Master : Imac i7 2020 64gb ram
Slave : MacBook Pro i9 2019 64gb Ram