If you want to replace or update one bridge endpoint with another, you will want to determine which bridge models and mappings are associated with this bridge/endpoint. While this can be done manually by examining each mapping:
It is likely you will want a way to perform this function without the repeated manual steps. You can do this using the API.
Use the Bridge Models API and perform a GET including mappings.
This will give you a list of all the bridge models and their mappings. Within each mapping, you will be able to see the bridge used.
This will give you a quick way to review all models/mappings.