Answering my own question here...

In the Notation view, there is an Opt. button. Pressing that brings up the Notation Window Options.

Pressing the More... button the Other Notation Options, which includes Inserted Note Defaults.

The default duration for notes is 80%.

Simple to fix, right? smile

Unfortunately, not entirely. frown

First of all, setting it to 100% only effects notes added after the change. So you can't fix prior notation by changing things.

That's not really a big deal.

However, BiaB still generates a generates rests (of duration 1, the smallest tick size).

So if I set this, I can filter the rests with much more confidence.

But... The behavior is still wrong, because the rests shouldn't be in the MusicXML at all. eek

-- David Cuny
My virtual singer development blog

Vocal control, you say. Never heard of it. Is that some kind of ProTools thing?