Hi,
1. If your bw 7.3 then you can see the version management option from menu screens.
About data source you can compare each object of data source dev to prod.
2. at dev system you didn't touched your data source(delta settings,RSO2) by change mode in that case your delta pointer will won't disturbed. if disturbed then you need to delete the init and do the reinit.
3. With data DSO or With out data dso. there is no changes. Transport will move only DSO/cube structures.
Thanks