Database Mirroring Monitor is currently managing a connection to server instance '{0}' with different credentials than those ...

Database Mirroring Monitor is currently managing a connection to server instance '{0}' with different credentials than those specified. 

It currently connects to this instance using:
      {1}

The new credentials for connecting to this instance are:
      {2}

Only one set of credentials can be stored for each server instance. Do you want to use the new or the current credentials when connecting to server instance '{0}'?