[discrete]
[[breaking_80_ccr_changes]]
==== Cross Cluster Replication changes

//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide

//tag::notable-breaking-changes[]
.Remote system indices are not followed automatically if they match an auto-follow pattern.
[%collapsible]
====
*Details* +
Remote system indices matching an {ref}/ccr-auto-follow.html[auto-follow
pattern] won't be configured as a follower index automatically.

*Impact* +
Explicitly {ref}/ccr-put-follow.html[create a follower index] to follow a remote
system index if that's the wanted behaviour.
====
// end::notable-breaking-changes[]