If you activate retrospective midi record prior to hitting stop it doesn’t record expression maps. It will record everything else, CC, notes, etc.
- hit play
- trigger an expression map
- play some notes
- activate retrospective record (a region with your recorded midi material will appear)
- hit stop
you’ll see that the expression map data has not been recorded.
Mac, 10.10.5. Cubase 8.5.15
thanks!