It is a shame that nobody at Dell/ EMC has public tools to easily support such migration, especially after 30 years in the market. Maybe Professional Services know better. Actually I do not know what will happen as I never looked at the retention dates. But even if the old values will not be used, you can still change the retention date (per save set) with the nsrmm command. Script this process and you are done.  
My predecessor created the networker server using the FQDN as its name. I now have to rename the domain which entails renaming the networker server. I have administrated networker for quite some time but have never used processes like scanner as i have never had the need. I would like your opinion as to my process to accomplish the manual renaming of my server. My server is currently live and I plan to record as much information from it as possible so any tips on what i should record would also be appreciated. Please look at my process below and let me know what you think and thank you for your time.
Rename EMC Networker (Rebuild without bootstraps)