PDF/UA attributes don't inherit parent

[pgundlach]

<Layout xmlns="urn:speedata.de:2009/publisher/en"
    xmlns:sd="urn:speedata:2009/publisher/functions/en">
    <PDFOptions format="PDF/UA" />
    <StructureElement role="Document" id="doc">

    </StructureElement>

    <Record element="data">
        <PlaceObject>
            <Table role="Table" parent="doc">
                <Tr role="TR">
                    <Td role="TD">
                        <Paragraph>
                            <A href="{Url}">
				 <Value select="Url/@display"/>
			  </A>
                        </Paragraph>
                    </Td>
                </Tr>
            </Table>
        </PlaceObject>
    </Record>
</Layout>

bad structure