In NSX 4.x environments, you may observe that the NSX Manager UI fails to correctly display Edge associated with Logical Routers. While the configuration is active and functional within the NSX database, the UI does not accurately reflect these associations. This is a display-specific issue caused by a failure in the search indexing component.
VMware NSX 4.x
This issue is caused by a synchronization failure where the NSX search index becomes out of sync with the actual NSX database. Indexing failures prevent the UI from correctly fetching and rendering the state of Edge nodes and their associated Logical Routers.
To resolve this issue, you must manually resynchronize the search index on the NSX Managers.
Log in to the CLI of each of the three NSX Managers as the admin user.
Execute the following commands in order:
start search resync policy
start search resync manager
start search resync all
Refresh the NSX Manager UI to verify the associations are now visible.
Note: This behavior is a known limitation in NSX 4.x and is addressed in VCF 9.
https://knowledge.broadcom.com/external/article?articleNumber=382135