Purchase order Hold on Suppliers

Hello Experts

I have a scenario where my business want to enable a hold on supplier to stop creating new orders and we enabled All New Orders flag on supplier however my business would like to uplift or make changes to the existing purchase orders. If we enable this flag it is stopping to update the existing purchase orders as well, is there any way in oracle to stop the users to create new purchase orders and to allow to update the existing purchase orders?

We are in R12.1.3

Thanks

Dilip