Hello,
this is weird, when i assign a Mackie fader to a VE Pro 5 Fader it controls the midi volume just fine, however, it's also controlling the pitch fader in in the perform section of VI Pro 2 as well. I tried to reassign the pitch fader in VI Pro 2 to my keyboard controller pitch wheel thinking that would solve the problem, but it doesn't bypass the Mackie volume fader from controlling the pitch fader in VI Pro 2.