[Samba] Replication of Samba 4.8 DC to 4.19 ?

[miguel medalha]

I have a particular AD domain which, due to hardware- and OS-related issues,
is still at version 4.8.12.

It is finally possible to upgrade the system. If I add a new version 4.19 DC
to the domain, will it replicate correctly from version 4.8.12, or will I
need to upgrade in phases, from major version to major version?

The current DCs would then be removed from the domain and scrapped.

Any tips, in particular those coming from direct experience with a similar
situation, would be much appreciated.