Migration of system mailboxes from 2013 to 2019?

[chicken1993]

It is a hybrid environment with exchange 2013. User mailboxes have been migrated to exchange online.
We want to migrate to exchange 2019. do we need to migrate the system mailboxes from exchange 2013 to 2019? Or do I just need to recreate the system mailboxes in exchange 2019?

[#2]

It's easier to migrate them. You won't be able to remove Exchange Server 2013 if the organisation believes mailboxes are hosted by the 2013 server