Records scan

I need to scan all records in a report to export some data, I use this code:

CXTPReportRows* pRows = m_wndReport.GetRows();

ASSERT( pRows);

ASSERT( m_nNumRows == pRows->GetCount());

for ( nRow = 1; nRow <= m_nNumRows; nRow++) {

spread.SetRow( nRow);

CXTPReportRow* pRow = pRows->GetAt( nRow - 1);

ASSERT( pRow);   // <<<<<<<<<<<<<< Error, see notes below 

if ( pRow == NULL)

continue;

CXTPReportRecord* pRecord = pRow->GetRecord();

ASSERT( pRecord);

if ( pRecord) {

.... code ....

The problem is that this works as aspected when no gouping is performed, but when there is an active group I got as many assertion as the number of groups and the scan ends at Rec-Group item.

Do You have an idea or a better solution then

if ( pRow == NULL) {

   m_nNumRows++;

   continue;

}

TIA