Can you comp midi lanes?

I have done a drum track using groove agent , most of it is good but the fills need some work. I can cycle record and make lanes just like I do with the Audio when I want to comp but I can’t work out how to comp the Midi lanes. Is it possible? if so how do I do it?

No problem. Just make sure you set your midi record mode to ‘new parts/keep last’. Record your sessions and open lanes to start comping.

https://steinberg.help/cubase_pro_artist/v9/en/cubase_nuendo/topics/recording/recording_midi_record_modes_r.html