I understand that system upgrades are done in pieces eg: 1- DEV,2- QA,3-PRD. As soon as it is done for DEV, we can run su25 and update the customer tables.And similarly for QA and PRD.But for QA and PRD we just transport the newly filled tables form DEV.From my understanding we dont need sap_new profile any of the users in DEV,QA.But for PRD do we need sap_new profile? as the business runs in production will the system upgrades affect the users authorization? or once it is upgraded ,just transport the tables from QA without assingnig sap_new to any of the end users??