Procurement Contract document needed for Requisition change order needs 2 revisions

Hi, we are implementing Procurement Contracts to an established 12.1.3 Purchasing environment. Using iProc requisition change order process I am needing to have two revisions to a Purchase Order in order to add Contract revision document.

iProc requisition change order created, approved. Buyer can then Respond to Change Requests, accept which updates the purchase order to Rev 1. At this time I can update purchase order header details and Manage Contract Documents (Contract image, Supporting Documents). In order to attach the contract variation document I need to Update Contract Terms which takes the purchase order to Rev 2.

I would like to be able to add the new contract document without having to create another revision. Is there any way I can achieve this?