Cloning Fedora Server VPS to new one, any files I need to retain?

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I have just purchased a new VPS of the same harddisk capacity as my old VPS. Now I have 2 VPS with same capacity but different cores/ram. Both VPS offer a “rescue” system whereas the OS shutds down and then I can ssh to my VPS ip as root and be able to “see” the unmounted VPS disks.

I am now doing the cloning using dd. As follows:
0. Install Fedora on new VPS (destined to be wiped out soon) so that I have access to needed configuration files, e.g. network gateway, nameservers etc.

  1. set both VPS to “rescue” mode, meaning OS shuts down, disks unmounted, where I can access with ssh as root.
  2. ssh to the old VPS
  3. fdisk -l shows /dev/sda1 mounted at /boot and /dev/sda2 mounted at /.
  4. The clone command will dd current VPS disk /dev/sda upload it via ssh to the new VPS (whose content – i.e. a virgin Fedora OS – will be wiped out): dd if=/dev/sda bs=512M status=progress | ssh -C root@newIP 'dd of=/dev/sda bs=512M conv=fsync' . This command is now in progress for the next 3 hours as I initiated it for a test run. I can always wipe the new VPS and install virgin OS to reverse the dd’s effects above.
  5. login’ing in to the new VPS I can see with fdisk -l that the previous disk configuration has changed and now has /dev/sda1 and /dev/sda2 as my old VPS. Which is a good sign.

My question is what files should I retain from the NEW VPS from when I did a Fedora OS installation, which I should copy back into it after the clone with dd has finished. Where do I get the network configuration for example? gateway, nameservers etc.
On the other hand, I assume fstab and the disk uuids should be good for the new system as well, because of the cloning/dd.

I have found this discussion: Migrating/reinstalling your system: What to transfer over?
but it deals with a new system on which the old system has been copied file-by-file, as opposed to the dd cloning I am doing.

thank you