# istio_52519.yaml
apiVersion: release-notes/v2
kind: bug-fix
area: traffic-management
issue:
  - 52519

releaseNotes:
- |
  **Fixed** DestinationRules on same host but with different ExportTo can behave inconsistently, so stop merging the destinationRules when the exportTo attributes are totally different. If you want to toggle this behavior, you can set the `ENABLE_ENHANCED_DESTINATIONRULE_MERGE` environment variable to `false` in the pilot deployment.