Hi Ned, 

It makes sense. In transit right now but will remedy it tonight. 

> On Apr 15, 2014, at 12:28 PM, Ned Zimmerman <notifications@github.com> wrote:
> 
> In includes/modules/export/epub3/templates/ncx.php:
> 
> > +	</docTitle>
> > +
> > +	<?php if ( ! empty( $author ) ): ?>
> > +	<docAuthor>
> > +		<text><?php echo $author; ?></text>
> > +	</docAuthor>
> > +	<?php endif; ?>
> > +
> > +	<navMap>
> > +		<?php
> > +		// Map has a [ Part -> Chapter ] <NavPoint> hierarchy
> > +		$i = 1;
> > +		$part_open = false;
> > +		foreach ( $manifest as $k => $v ) {
> > +
> > +			if ( true == $part_open && ! preg_match( '/^chapter-/', $k ) ) {
> Hi Brad, the NCX template doesn't match what we've done to support invisible parts. See here. Basically, if the part is invisible, any chapters that are within it appear at the top level of the NCX hierarchy and therefore don't appear to have a parent part in exports. Let me know if this makes sense.
> 
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