Streams: Changes to replication support in replication groups (Preview)¶

Attention

This behavior change is in the 2025_06 bundle.

For the current status of the bundle, refer to Bundle History.

When this behavior change bundle is enabled, all secondary streams in a replication group behave as follows.

This change doesn’t affect failover groups.

Before the change:: Streams in a primary replication group are replicated to a secondary replication group on refresh.
After the change:: New streams in a primary replication group are not replicated to a secondary replication group on refresh. Existing streams in secondary replication groups are kept as is and will eventually become stale.

Ref: 2079