Change existing custom domain with SAML users

Hey there,

We would like to change our existing custom domain. I’am aware that changing custom domain would inevitable causing downtime, but are there any available official documents mentioning how to do it?

In addition to that, since we are having SAML clients. Another question is that do we need to ask our SAML clients to change their IPD configuration (map to new custom domain for call back url) in order for the SAML Authentication to be success after custom domain changed.