first of all thanks to the team for the new update!
I would like to know if it is possible to cut notes from a voice and paste them in an already present voice, so that they add (and not replace) the notes already present in that voice. Thanks for your help
Have you tried pasting them in Insert mode (if you want to move the notes sideways) or in chord mode or Paste Special to a different voice (if you want to paste them in below or above existing notes)?
Welcome to the forum, @Luca_Toldo. Select the first note in the voice you want to copy, then use Edit > Select More to progressively select more of the notes in that voice. Now use Edit > Copy to copy the selected notes to the clipboard. Finally, select the rest in the instrument where you want the music to be pasted, and choose Edit > Paste. You can use the standard system-wide shortcuts for cut, copy, and paste in Dorico.