> I tried that, for some reason the next element, which is
> <ScheduleLines> ends up getting an empty xmlns attribute.  Here is the
> complete XSLT

In your stylesheet the element  <ScheduleLines> is not in the scope of a
default namespace declaration so it generates an element in
no-namespace.

Move
xmlns="http://www.miltonstreet.com/SummaryViewDataSet.xsd"
on to your xsl:stylesheet element so that it is in scope for the whole
file and all unprefixed literal result elements will be in that
namespace.

David