It depends entirely how the MIDI file was made. The creator may have put each voice of the piano into a separate track. More commonly, all the notes are in one track, which means you don’t get the voicing information for different voices on each staff, but the notes are jumbled together in lots of tied notes.
Dorico does have some advanced capabilities for splitting notes into voices when they’re all on one track, but not the other way round.
You may be able to find some MusicXML files of Beethoven and Mozart, which may yield better results.
Whatever the source, you will need to check and correct the file against a decent published edition.
Arguably, it may be quicker/more reliable to enter the notes yourself. And it’s always good to hone your note entry skills!
I have already recopied the entire Hammerklavier Sonata for my own amusement and education (inspired by this thread 7 months ago). I’ll be glad to send you the file.
The extremely short notes in the 2nd movement of this sonata actually make it impossible for Dorico to import the rhythm correctly from midi. See my warning in the same thread.
Dear Mark:
Thank you for your e-mail and sonata score files
Thank you for your kindness
I also love his 32th sonata, a beautiful one.
Do you edit this score file purely manually?
Your score work is so beautiful and well-done
I will keep your file with care.
Have a great weekend and great day today
See you again, Mark
Also, it is midnight here, so I am going to bed now and will return later.
Thanks