Hi, I`m a bit unsure about "Enhance Security with a New Threading Behavior for Email-To-Case".

"A new Email-to-Case threading behavior matches incoming emails with their header information instead of through a Ref ID from the subject or body. New outbound emails don’t contain a Ref ID, and existing orgs get an upgrade path with an end-of-life notification for Ref ID.

How: Existing orgs get an upgrade path with an end-of-life notification for Ref ID. Until then, existing orgs are backward compatible with Ref ID. To avoid issues after the update, ensure that user headers are set correctly on Emails."

Do I understand correctly that all I need to do is remove the Ref ID / Thread ID from all email templates?

Thank you!

Rita