Scenario: Assume I am upgrading my ERP system to SPS21. I have two development systems DA1 & DA2. DA1 is in the production support path DA1->QA1-->PA1. DA2 is in the SAP upgrade path DA2-->QA2. To prepare for the upgrade I used system refresh techniques to copy DA1 to DA2 and QA1 to QA2. Then I applied SPS21 to both DA1 and DA2.
Once transports are applied to PA1 they need to be "replicated" in the upgraded systems so they can be tested again. What is the best method for getting the DA1 transports into DA2?
I was thinking of using the following technique
1) Use STMS to manually add the DA1 transport to DA2 - AFTER it is applied to the production system (PA2)
2) I will select the option to overwite originals when importing the DA1 transport to DA2
3) I will create a DA2 transport and merge the objects from the DA1 transport into this new transport
4) I will test the changes in DA2 and if it looks good I'll release the DA2 transport into QA2 for integration testing
Does this make sense? Is there a recommended way for performing this type of transport?