CascadingDropDown not working within EditItemTemplate in Ajax Beta

I had the cascading drop down working fine inside the EditItemTemplate in a gridview with the previous Atlas CTP release. But now it stopped working with Ajax Beta 1.0. Do I need to do something different to make it work again. I tried placing Gridview.Databind() in Page_Load, but that stopped the gridview from updating back to the database.

<EditItemTemplate>

<asp:DropDownListID="ddlBuEdit"runat="server"/>

<ajax:CascadingDropDownID="ccd1"runat="server"

TargetControlID="ddlBuEdit"

Category="BU"

LoadingText="Loading Data..."

PromptText="Select Business Unit"

ServicePath="getSelectionData.asmx"

SelectedValue='<%# Eval("BusinessUnit") %>'

ServiceMethod="getBU"/>

</EditItemTemplate>

Please see if this is relevant:http://forums.asp.net/thread/1441672.aspx.