MongoDB agents are not listed in the Database Global View dashboard

MongoDB dashboards still display data normally.

Duplicate monitoring of MongoDB replicas.
Check the Database Connections in the Agent Status Properties of the MongoDB agents for duplicate monitoring where there are different hosts with the same alias or different replica sets with the same aliases.
If the agents were created with the wizard, using discovery, even if the discovery was seeded with different nodes, if those nodes are in a single replica set, the agents will each be monitoring every object.
The DBConnectionsList Agent Status Properties are shared across all the agents. Users should clone the agent status property list and configure the replicas as per the agents.