I am iterating over a xamdataGrid via the records collection using the code below. What causes the CellValuePresenter to return null? The record exists in the xamDataGrid, has a cell and the cell has a value. The iteration code is take from your documentation site. The datagrid is part of a ContentPane that is being loaded, displayed and controls recursed for values via Visual/LogicalTreeHelpers at run-time.

foreach (Record record in records)
{
  if (record.RecordType == RecordType.GroupByField || record.RecordType == RecordType.GroupByFieldLayout)
  {
    GroupByRecord groupRecord = (GroupByRecord)record;
    //TODO: Add logic to process the group by record

  }
  else if (record.RecordType == RecordType.DataRecord)
  {
    DataRecord dataRecord = (DataRecord)record;

    foreach (Cell cell in dataRecord.Cells)
    {
      CellValuePresenter cellValuePresenter = CellValuePresenter.FromCell(cell);
      // CellValuePresenter is null when file is loaded and recursed immediately after load.
      // CellValuePresenter is not null when loaded, displayed and then recursed

     // unrelated code omitted.
    }

  }
}