What do you want to do in notation?
I once had to do some notation for someone from a midi file, and after about 15-20 minutes I put text on the score and figured out what was wanted.
I don't think it was too bad.
I do remember doing some notation out of a book and couldn't reproduce a certain beat..........it was some kind of triplet but this was with version 5......and I can't remember what it was exactly. It didn't look right.....but the timing was correct so I assumed it was the same note with a different appearance to the book.
You can certainly take a score and transfer it into midi tracks in Metro.
I can't be more detailed........I'm more of a record the notes from a synth type of person.