I was just going to post that I found a way using tunnel paramters. I
added this template in the included XSLT file and it does the trick
because at this point I am now only dealing with XML content.

B B B B <xsl:template match="/">
B B B B B B B  <xsl:apply-templates>
B B B B B B B B B B B  <xsl:with-param name="PROPERTIES"
select="/j:map/j:map[@key='properties']"
B B B B B B B B B B B B B B B  tunnel="yes"/>
B B B B B B B  </xsl:apply-templates>
B B B B </xsl:template>

But unless you have an overriding xsl:template match="/" in the
importing stylesheet the above would prevent your template matching
"data" to be ever reached in the importing stylesheet.