Export function - error in field name for not visible columns

[giervella]

When I export the ListGridFields from a table into excel, I see the field name instead of the field description for the not visible fileds (having the detail flag set to true).

<field title="Instrument name" customSQL="true" tableName="pmptinstr" name="INSTRNAME" editorType="ComboBoxItem" type="text" length="255" canFilter="true" align="left" cellAlign="left" detail="false"></field>
<field title="Instr. code" customSQL="true" tableName="pmptinstr" name="CLASSCODE" type="text" length="30" canFilter="true" width="80" align="left" cellAlign="left" detail="false" canEdit="false"></field>
<field title="Bond class" customSQL="true" tableName="pmptinstr"  name="BNDCLASSID" type="integer" filterOperator="equals" canEdit="true" width="100" editorType="ComboBoxItem" filterEditorType="SelectItem" detail="false" align="left" cellAlign="left"></field>
<field title="Period" customSQL="true" tableName="pmptper" name="NDAYSDESC" type="text" length="30" canFilter="true" editorType="ComboBoxItem" width="70" align="left" cellAlign="left" detail="false"></field>
<field title="Instrument ID" name="INSTRID" type="integer" filterOperator="equals" editorType="ComboBoxItem"  filterEditorType="SelectItem" width="80" align="left" cellAlign="left" detail="true"></field>
<field title="HP" name="NV" type="integer" filterOperator="equals" width="40" editorType="ComboBoxItem"  filterEditorType="SelectItem" align="left" cellAlign="left" detail="false"></field>
<field title="Period (days)" name="NDAYSPER" type="integer" filterOperator="equals" editorType="ComboBoxItem" width="73"  align="left" cellAlign="left" detail="false" ></field>
<field title="Var. type" name="VARTYPE"  type="text" length="1" width="70"  align="left" cellAlign="left" detail="true"></field>
<field title="Mode" name="MODE" type="integer" primaryKey="true" editorType="ComboBoxItem" width="70" canEdit="false" align="left" cellAlign="left" detail="true"></field>...

Have you got any suggestion?

[Isomorphic]

Remember to provide complete information: version tested, what kind of export this is (client or server), complete DataSource file, complete server log for the request, etc.