Wow! Such quick replies!

Thank you all SO much.

Thanks VideoTrack, but I'm not really comfortable with the Piano Roll view. I didn't quite see how to select and drag all the events.

Thanks to PhillyJazz and Noel96 and although I was very familiar with transposing a melody (I play the Bb tenor) I didn't realize that with enough transposition, BIAB will bring all the notes down into the bass clef. Transposing the melody down 12 semitones put melody notes in both clefs, but not like you'd expect. BIAB becomes confused and broke some of the melody line up into new melodic ideas in both clefs. Pretty strange. Maybe it had something to do with where I had set the transition point between clefs.

It took -24 semitones to move the melody properly down into the bass clef.

thanks again to all,
peter