Render plugin to instrument with note-off sounds?

I just tried using the ‘render plugin to instrument’ feature for the first time, and what I noticed first was that the notes get cut off abruptly at ‘note-off.’

Is there a way to get ‘note-off’ samples automatically? I did a bit of this manually, but selecting the end, copying into new sample, sending to the note-off layer, and fixing the base notes for each sample is fairly tedious.

Or, failing that, can I speed up the process of grabbing tail samples and putting them in the note-off section?