Company has a G Suite account with all the services, e.g.
firstname.lastname@example.org emails. Company changes name from A to B and gets another a G Suite account with emails
email@example.com. Now it is time to c**) ditch the first G Suite**, but first to a) merge mailboxes, b) set up domain aliases so that mail sent to old domain still lands in new domain inboxes. Merging G Drive would also be nice.
I have checked G suite documentation, which is very complicated on this topic, and the instruction often don't work and there are always hurdles. For example you can't add the old domain as an alias to new inboxes, since it is used under a different account, but I don't really wanty to delete it, unless it is attached and verified under the new account, etc...