Export midifile in D5? only one midifile?

In D4, I had finally abandoned the use of multiple flows in my projects dedicated to educational purpose, for the simple reason that D4 did not allow to export a project with several flows in a single midi file that I wanted to import into cubase to replace some instruments with real instruments.
Does D5 now allow to export a project with multiple flows into a single midi file?

No, there’s no change in this regard in Dorico 5.