There are two Layer7 gateways in the external environment and replication between these gateways is working as expected. When updating portal Integration on one gateways (Policy Manager->Tasks->Extensions and Add-Ons->Update Portal Integration) does the second gateway need the update as well?
API Gateway 10.0
Run the Update Portal Integration on the node that is enrolled to the Portal and restart the the Gateway service (as outline in our documentation). Also, restart the gateway service on each node in the cluster. This will clear the DB cache, allowing all gateway nodes to sync the updates from the Portal Integration update.