Make sure the combo box is unbound and put the following code in it's
after update event.
Me.RecordsetClone.FindFirst "[OrderID] = " & cboOrderID
Me.Bookmark = Me.RecordsetClone.Bookmark

You can also use the form's Input Parameter property to accomplish the
task. However, this method might requires you to make more changes to
the form than you'd like.

Good Luck.