@Alexis Rua Yes but it will have to be scripting. Once the transactions are paired, any modification on either SO or PO will have to be manual. I wished it changed it automatically, but i created UE script to achieve that.

Thank you for answering @Milan Rao How has that UE script worked out for you?

it worked like a charm, What i did is to have UE script to execute on a paired transactions. anytime any information is changed on the po automatically changes SO fields. But i did only for line fields, i had to map some of the fields from po to so. But it is definitely doable.