Paul,
You can also keep your sustain pedal pressed and retrigger the sustained note to force a bow-change (this will switch to a repeated note in legato mode automatically).
I tried the sustain pedal trick, both with the SE default and the Sibelius SE preset/matrix. I tried both the sustain and the performance legato articulations. I tried with the pedal always down, or just pressed just before the retriggering of the note, and then releasing it.
However, what I get is that several notes continue to stack up, as if the damper pedal was kept pressed with a synthesizer.
Is there a video tutorial, or some more in depth instructions for this topic? I'm trying to do this long notes/legato thing, but am not yet able to do it.
Thank you!
Paolo