In the RowDetails for a grid item I have a data template column as below.  If I check the checkbox on the first rowdetails item, every first rowdetails item in the entire grid has the check box checked.  Even if the SentToAcctFlag value for that item is False.  If I check one item in the row details I want only that one item to be checked.  Even refreshing the grid data using ItemsSource does not remove the first rowdetails item checked value for each parent record.

                                        <telerikGrid:DataGridTemplateColumn Header="To Acct" HeaderStyle="{StaticResource WorkOrderGridColHeader}" SizeMode="Fixed" Width="100"
                                                        CanUserEdit="True" CanUserSort="False" CanUserFilter="False" CanUserResize="False"  >
                                            <telerikGrid:DataGridTemplateColumn.CellContentTemplate >
                                                <DataTemplate>
                                                    <CheckBox IsChecked="{Binding SentToAcctFlag}" Margin="12,1,0,0" IsEnabled="True" Checked="SentToAcct_Checked" Unchecked="SentToAcct_Unchecked" />
                                                </DataTemplate>
                                            </telerikGrid:DataGridTemplateColumn.CellContentTemplate>
                                        </telerikGrid:DataGridTemplateColumn>