Enable [easy] amendment of PO after I&R and sales activities

If you find yourself in the real-world scenario where a supplier is going to ship & invoice you for a different SKU to what was ordered, and it's an Advance Purchase that already has multiple completed records for Invoicing & Receiving - plus items received have since been sold - it requires multiple layers of undoing these records to make the simple edit to the original PO. It is a very convoluted, manual process that opens up risk to greater errors in within the inventory management system. Cin7 should work on fixing this - and recognise that this is a typical real -world scenario and the receipting process in Cin7 should [easily] accommodate this.