"then it will not follow any edits that were made"........... it does, sorry, it`s a fact, but can`t be saved, even if frozen. The original is not beeing affected by this, only "new" beats are added. Sometimes they stay, sometimes expire.

I transpose usually in the main menue.."edit/transpose"..xy semitones..set a minus in the dialog box if necessary. If a transpose(shift)in the song is needed,I might manually go for it or as described. The thing is, the "melody" ( for this song "piano") part stays untransposed.