Will traefik renew custom certificates?

[cakiwi]

From just the other day. Here is what I did, it worked out okay.

Migrating from nginx to Traefik: building acme.json from existing certificates?

Are these already using LetsEncrypt? Maybe do a force-renew so you have additional time for testing/cutover. When I did this I just took the certificates themselves and created a tls.certificate entry in a file provider. Before expiry of certificates I updated the routers to use the LetsEncrypt certificate resolver.