Is is possible to prevent "Miscellaneous" Attachment on supplier record appearing on Purchase Order.

Running 12.0.6

Hi - our supplier maintenance team use the supplier attachment category Miscellaneous for various notes to supplier record. This attachment is viewable on the electronic Purchase Order in for example PO Inquiry/PO summary which I believe is intended functionality. How can we prevent the Miscellaneous supplier attachment from being viewable on the PO in inquiry screens. Or how do we create a new supplier record attachment that does not come out on the electronic Purchase Order?  

Thanks, Rodders.