Thanks for the question.
I would like to clarify one point that in either case after the objects are moved from one system to another, say from Dev to Test system, we need to maintain the schema mapping as well because the objects developed in Dev with given table resides in the Dev Schema but in Test system the schema would be different and hence authoring schema would be Dev Schema and Physical schema would be Test Schema in the Test system.
Do anybody have any comment on this?