Thanks, actually the subform has no dependency on the parent. Its just setting the Combo to the value it was last set to to filter the records in the subform. I was just curious what would trigger this odd behaviour. Good point re setting it in the subform itself. Will give that a go if this...
I have a form with VBA on the Open event. It is setting the value of a combo box control on an embedded subform:
Me.subfrmShoppingListItem.Form.cboShoppingList = Nz(GetDefaultValue(5))
This works fine whenever I open the form from scratch.
HOWEVER if I place the main form in Design View and...