I need to replace storage on my Raspberry Pi and my question is if it's enough to use Teleporter backup/restore or if I manually need to backup/copy files to have as identical setup as current as possible?
System:
Raspberry Pi 4, Raspberry Pi OS, Bookworm (lite)
Core vDev (development-v6, 448b1f4d)
FTL vDev (development-v6, db32e4da)
Web interface vDev (development-v6, 78f59dda)
In v6, the Teleporter backup contains all your settings except your query history (it could make the archive several gigabytes otherwise). Restoring should create an identical Pi-hole as the one you have backed up before.
However, v6.o is still in beta phase and I'm not sure how many have actually used the improved Teleporter to backup/restore besides the testing we did internally. Hence, I'd suggest to use Teleporter but - just to be 100% on the safe side - to also create a backup of the entire /etc/pihole directory - just in case you notice something is missing after restoring the Teleporter archive.
We're here and eagerly await your feedback whether everything has worked or if you noticed something missing 
TL;DR: Do both.
I'll come back as soon as I receive my new SSD (moving from SD-card to SSD).
SSD installed and configured.
As far as I can see is everything transferred correctly with Teleporter backup/restore!
Checked Domains, clients, DHCP range, ... It all looks good and everything is working as supposed!
Thank You!
P.S.
Nothing copied manually, just Teleporter!