使用xslt复制包含特定子元素的父元素

I have a simple xml:

我有一个简单的xml:

<custom-objects>
    <custom-object id="1">
        <object-attribute attribute-id="address1">Warndtstr. 33</object-attribute>
        <object-attribute attribute-id="branch">01</object-attribute>
        <object-attribute attribute-id="catalogid">7991</object-attribute>
        <object-attribute attribute-id="exportdate">2015-09-19</object-attribute>
    </custom-object>
    <custom-object>
...
    </custom-object>
</custom-objects>
<custom-ob