samba - Aug 2016 - samba domain member move to new domain with trust relationship

Hello all,

My samba server is currently member of OLDDOMAIN
OLDDOMAIN and NEWDOMAIN have a full 2way trust relationship.

How do I go about joining my samba server to NEWDOMAIN?

Is it a question of disjoining from OLDDOMAIN and joining to NEWDOMAIN?

My google-fu is not strong on this one..

Thank you in advance,
Coert