Hi Naresh,
- SLD export and import into new SLD instance (just keep in mind to double check every Business System target transport group - Business system --> Transport groups;
- ESR objects - Simply exporting from 7.1 and importing into 7.3. CTS+ would take care of that, as well.
- ID objects - CTS+ would also take care of this, but you can go ahead exporting TPZ files and importing into target system. Anyway, you have to remember to transfer objects from Admin user to your own and then proceed with adapter verifying and lastly, activation.
Refer:
Migration of SLD and interfaces from PI 7.1 to PI 7.3
Transporting SLD Content Using CTS+
Regards,
Azhar