OK, I figured it out !
I have to say that the source of the problem was my lack of understanding about the real definition of the header and footer templates (odd, even, first, last).
This whole time I was playing around with the even and odd templates of the FrontMatter but for the cover page (which is basically the first page of the FrontMatter) what I really needed was to work on the template of the first page of the FrontMatter… but, you guessed right, there is NO template for the first page of the FrontMatter (I guess is not that common to have header and footer in the cover page).
After I had this realization, it was just a matter of creating/modifying the right templates and also modifying the master layout for the first page of the FrontMatter which only had definition for the "region-body" so I had to add for "region-before" and "region-after".
See below all the details of the modifications (BTW, for all my customizations I've created a custom plugin as described in the manual)
http://dita-ot.sourceforge.net/1.6/read ... ation.html
NOTE: All modifications below were added to the custom.xsl file located at \plugins\your-plugin-name\cfg\fo\xsl\custom.xsl
1.- Modify the template insertFrontMatterStaticContents originally found at \DITA-OT1.6.2\plugins\org.dita.pdf2\xsl\fo\static-content.xsl including two new calls for two new templates insertFrontMatterFirstHeader and insertFrontMatterFirstFooter (in bold below)
<xsl:template name="insertFrontMatterStaticContents">
<xsl:call-template name="insertFrontMatterFootnoteSeparator"/>
<xsl:call-template name="insertFrontMatterOddFooter"/>
<xsl:if test="$mirror-page-margins">
<xsl:call-template name="insertFrontMatterEvenFooter"/>
</xsl:if>
<xsl:call-template name="insertFrontMatterOddHeader"/>
<xsl:if test="$mirror-page-margins">
<xsl:call-template name="insertFrontMatterEvenHeader"/>
</xsl:if>
<xsl:call-template name="insertFrontMatterFirstHeader"/>
<xsl:call-template name="insertFrontMatterFirstFooter"/>
<!-- <xsl:call-template name="insertPrefaceLastHeader"/>-->
<!-- <xsl:call-template name="insertPrefaceLastFooter"/>-->
</xsl:template>
2.- Create the two brand new templates referred above: insertFrontMatterFirstHeader and insertFrontMatterFirstFooter (see in bold the content of the header and footer, just place holders).
<xsl:template name="insertFrontMatterFirstHeader">
<fo:static-content flow-name="first-frontmatter-header">
<fo:block xsl:use-attribute-sets="__body__first__header">
<fo:block text-align="center">
<fo:external-graphic src="url({concat($artworkPrefix,'/Customization/OpenTopic/common/artwork/nominum_logo.gif')})"/>
</fo:block>
</fo:block>
</fo:static-content>
</xsl:template>
<xsl:template name="insertFrontMatterFirstFooter">
<fo:static-content flow-name="first-frontmatter-footer">
<fo:block xsl:use-attribute-sets="__body__first__footer">
<fo:block text-align="center">
<fo:external-graphic src="url({concat($artworkPrefix,'/Customization/OpenTopic/common/artwork/nominum_logo.gif')})"/>
</fo:block>
</fo:block>
</fo:static-content>
</xsl:template>
3.- Finally, modify the simple-page-master layout for the front-matter-first page adding region before and after definitions (in bold below)
<xsl:template name="createDefaultLayoutMasters">
<fo:layout-master-set>
<!-- Frontmatter simple masters -->
<fo:simple-page-master master-name="front-matter-first" xsl:use-attribute-sets="simple-page-master">
<fo:region-body xsl:use-attribute-sets="region-body__frontmatter.odd"/>
<fo:region-before region-name="first-frontmatter-header" xsl:use-attribute-sets="region-after"/>
<fo:region-after region-name="first-frontmatter-footer" xsl:use-attribute-sets="region-after"/>
</fo:simple-page-master>
…snip, Rest of the template
Best regards,
Beltran