This is a little bit tough. In order to reinstall/upgrade a Linux OS, and both keep the /home folder and contents, reformat the target partition, install the new OS, and merge the /home folder and subfolders all together, I need to know the best way to do it.
I've considered that after the install, I first copy the newest /home folder onto the oldest one, then copy the oldest one back over the newer one. That ensures the config files reflect the actual state of the install. But I may be missing something here.
Some suggestions would be appreciated.