Auto SSL and changing cloud providers


I am moving an instance of rocketchat (keeping the domain name the same) to a new cloud provider

I am a little bit unsure of what I need to do regarding SSL certs before switching the dns to the point at the new server’s ip.

So far I have installed certbot and copied /etc/letsencrypt/* to the new instance.
( as well as rocketchat data, which is working fine)

I have also copied the CaddyFile accross.

Will Caddy automatically pick this up, or will I need to configure it in some way?

Thanks in advance