Forcing order of book titlepage templates

I have a complex book verso titlepage where I want to apply elements
    in the order I have them in the XML. For example, I have elements in
    the order:

    <copyright>

    <legalnotice>

    <releaseinfo>

    <cover role="imprint">

    <printhistory>

    <cover role="imprint">

    <revhistory>

    <cover role="imprint">

    

    I have general information within each <cover> attribute and
    want to apply other elements in between.

    I read in The Definitive Guide that:

    "If instead you want to force the output order to match the order of
    those elements in your documents,

    add a order="document" attribute to the t:titlepage-content element."

    

    I did this and transforming the spec file to XSL it created the
    attribute order="document" on fo:blocks (for recto and
    verso content) in the template book.titlepage. But when I transform
    to FO (Saxon 6.5.5, XEP 4.19) I get the error that attribute order
    is not permitted on fo:block.

    Have I missed something? 

    

    
-- 

      Dave Gardiner