How to prevent the PO created from B2B SO to go for reapproval when a date change is made in the SO

We are creating the PO from Back to Back sales order. When the date in the sales order line is changed then a PO change order is created which goes for self-approval as per the change order approval rule setup. Can the change order approval be configured such that the changes made to the dates on the sales order do not trigger change order approvals in the linked purchase order. The requirement is even the self approval for the PO change Order should not be triggered for this senario