Scenario:

Created a document via XSLT filter, where border attribute does not remain
during the import into Calc.

Therefore created a simple test document, where two different cells using the
same style properties, but one using a template, the other an automatic style,
inherit from the same parent style.

Theoretially both cells should look the same, as they use the same properties
and inherit from the same parent.

But they don't. Only the cell using the template style inherits correctly from
the parent, the styles from the automatic style cell are overwritten from it's
parent.
(Happens here for Border style attributes).

The reason is the use of the attribute style:text-align-source with the value
"fix" in the automatic style.
<define name="style-table-cell-properties-attlist" combine="interleave">
    <optional>
        <attribute name="style:text-align-source">
            <choice>
                <value>fix</value>
                <value>value-type</value>
            </choice>
        </attribute>
    </optional>
</define>

'fix' means that the horizontal align is not dependent on the cell content type
but of the 'fo:text-align' value.

<define name="style-paragraph-properties-attlist" combine="interleave">
    <ref name="common-text-align"/>
</define>
<define name="common-text-align">
    <optional>
        <attribute name="fo:text-align">
            <choice>
                <value>start</value>
                <value>end</value>
                <value>left</value>
                <value>right</value>
                <value>center</value>
                <value>justify</value>
            </choice>
        </attribute>
    </optional>
</define>

The problem appears, when style:text-align-source is being used, without
providing a value for fo:text-align="center".