Migration from chirpstack V3 to V4

ChirpStack Network Server
1

Hi,
I searched about the data migration of Redis and Postgresql from chirpstack v3 to v4 but found none.
my question is:-
- do I need to manually migrate the database and Redis?
- after migrating and all the data is in the chirpstack v4, do I need to rejoin all the devices?

Thanks.

2

This has been documented here:

https://www.chirpstack.io/docs/v3-v4-migration.html