To migrate visualizations or dashboards from one OpenSearch instance to another, follow these steps:1. Export Saved Objects: Go to Management > Saved Objects > Export and select the objects to export.2. Correct the .ndjson file: Remove index-pattern information if it already exists in the new instance.3. Import Saved Objects: Go to Management > Saved Objects > Import in the target instance and upload the .ndjson file.4. Verify Migration: Open the imported visualizations or dashboards, check their functionality, and update any missing or mismatched resources.