UpdatePanel with Ajax Took Kit TabPanel revisited

I know there are a number of posts regarding similar issues but I've reviewed them all and my markup and can't seem to find a resolution.  I have the markup below for one of my AjaxToolKit tabpanels.  I'm trying to add the updatepanel to allow it to postback rather than the entire page.  I've tried putting the updatepanel and triggers inside the contenttemplate, outside it but inside the Ajax tabpanel and now outside the Ajax tabpanel but continue to get the same errors each time.  All I'd like to do if have the gridview update on postback.  Those errors are...

Element 'updatepanel' is not supported.

Element 'triggers' is not supported.

Element 'asyncpostbacktrigger' is not a known element.

Also, after moving the updatepanel and triggers outside the Ajax tabpanel I'm now getting 'headertemplate' and 'contenttemplate' is not supported.

<ajaxToolkit:ToolkitScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true"></ajaxToolkit:ToolkitScriptManager><ajaxToolkit:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="1" Height="800px"
                     BackColor="Gray" AutoPostBack="False" ScrollBars="Auto"><updatepanel ID="dgvBomUpdate" runat="server" UpdateMode="Conditional"><triggers><asp:asyncpostbacktrigger ControlID="btnPartAdd" EventName="Click" /></triggers><ajaxToolkit:TabPanel ID="tab1" runat="server"
                            HeaderText="BOM" ScrollBars="Both" OnDemandMode="None"><HeaderTemplate>
                            BOM</HeaderTemplate><ContentTemplate><table class="style1"><tr><td class="style11"><ajaxToolkit:ComboBox ID="cbxPartLookup" runat="server" 
                                            AutoCompleteMode="SuggestAppend" MaxLength="0"></ajaxToolkit:ComboBox></td><td class="style11"><asp:Button ID="btnPartAdd" runat="server" OnClick="btnPartAdd_click" 
                                            Text="Add Part" /></td></tr></table><asp:GridView ID="dgvBOM" runat="server" AutoGenerateColumns="False" width="858px" CellPadding="4" ForeColor="#333333" GridLines="None"><AlternatingRowStyle BackColor="White" /><Columns><asp:TemplateField HeaderText="Status" SortExpression="Status"><EditItemTemplate><asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Status") %>' Width="35px"></asp:TextBox></EditItemTemplate><ItemTemplate><asp:Label ID="Label1" runat="server" Text='<%# Bind("Status") %>' Width="35px"></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Part ID" SortExpression="Part ID"><EditItemTemplate><asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("PartNum") %>' Width="145px"></asp:TextBox></EditItemTemplate><ItemTemplate><asp:Label ID="Label2" runat="server" Text='<%# Bind("PartNum") %>' Width="145px"></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Description" SortExpression="Description"><EditItemTemplate><asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("PartDesc") %>'></asp:TextBox></EditItemTemplate><ItemTemplate><asp:Label ID="Label3" runat="server" Text='<%# Bind("PartDesc") %>'></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Cur Qty" SortExpression="Cur Qty"><EditItemTemplate><asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("CurQty") %>' Width="35px"></asp:TextBox></EditItemTemplate><ItemTemplate><asp:Label ID="Label4" runat="server" Text='<%# Bind("CurQty") %>' Width="35px"></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Cur Due" SortExpression="Cur Due"><EditItemTemplate><asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("CurDue") %>' Width="55px"></asp:TextBox></EditItemTemplate><ItemTemplate><asp:Label ID="Label5" runat="server" Text='<%# Bind("CurDue", "{0:d}") %>' Width="55px"></asp:Label></ItemTemplate></asp:TemplateField><asp:TemplateField HeaderText="Qty Per" SortExpression="Qty Per"><EditItemTemplate><asp:TextBox ID="TextBox6" runat="server" Text='<%# Bind("QtyPer") %>' Width="35px"></asp:TextBox></EditItemTemplate><ItemTemplate><asp:Label ID="Label6" runat="server" Text='<%# Bind("QtyPer") %>' Width="35px"></asp:Label></ItemTemplate><HeaderStyle HorizontalAlign="Center" /><ItemStyle HorizontalAlign="Center" /></asp:TemplateField><asp:CommandField ShowEditButton="True" /><asp:CommandField ShowDeleteButton="True" /></Columns><EditRowStyle BackColor="#2461BF" /><FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" /><HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" /><PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" /><RowStyle BackColor="#EFF3FB" /><SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" /></asp:GridView></ContentTemplate></ajaxToolkit:TabPanel></UpdatePanel>