Shape properties in drawing not populated on save

[KISPE-Shane]

When DrawingAnchor::loadXmlObjectShape encounters "nvSpPr", "spPr", "style" or "txBody", no corresponding data is loaded from the XML:

while (!reader.atEnd()) {
    reader.readNextStartElement();

     if (reader.tokenType() == QXmlStreamReader::StartElement) {
        if (reader.name() == QLatin1String("nvSpPr")) {

        } else if (reader.name() == QLatin1String("spPr")) {

        } else if (reader.name() == QLatin1String("style")) {

        } else if (reader.name() == QLatin1String("txBody")) {
        }
    } else if (reader.tokenType() == QXmlStreamReader::EndElement &&
               reader.name() == QLatin1String("sp")) {
        break;
    }
}

so when the file is written, we get

<xdr:sp macro="" textlink="">
xdr:nvSpPr
<xdr:cNvPr id="" name="">
<a:extLst/>
</xdr:cNvPr>
xdr:cNvSpPr/
</xdr:nvSpPr>
xdr:spPr
...

If we then load the corresponding .xlsx file into Excel, we get a message saying the file needed to be repaired resulting in

<xdr:sp macro="" textlink="">
xdr:nvSpPr
<xdr:cNvPr id="2" name="shape">
<a:extLst>
<a:ext uri="{FF2B5EF4-FFF2-40B4-BE49-F238E27FC236}">
<a16:creationId xmlns:a16="http://schemas.microsoft.com/office/drawing/2014/main" id="{00000000-0008-0000-0000-000002000000}"/>
</a:ext>
</a:extLst>
</xdr:cNvPr>
xdr:cNvSpPr/
</xdr:nvSpPr>
...
indicating that the id/name was lost between loading and writing of the XML.
xdr:spPr