fdo xml data types

I am using the free FDO provider in AutoCAD Civil 3D and connecting to a XML document (sample listed below) but when the XML is read in and flattened the OS_TOPO_TOID element is converted to a number rather than remaining a string; how can I get the XML reader to keep the OS_TOPO_TOID as a string?

 

 

 <Row>

 

  <OS_TOPO_TOID>0001000012320820</OS_TOPO_TOID>

 

  <OS_TOPO_VERSION>4</OS_TOPO_VERSION>

 

  <BHA_ProcessDate>2014-02-12</BHA_ProcessDate>

 

  <TileRef>SX99SW</TileRef>

 

  <AbsHMin>69.4</AbsHMin>

 

  <AbsH2>73.7</AbsH2>

 

  <AbsHMax>73.9</AbsHMax>

 

  <RelH2>4.3</RelH2>

 

  <RelHMax>4.5</RelHMax>

 

  <BHA_Conf>99</BHA_Conf>

 

 </Row>