I'm having an issue with a Gateway accepting a remote tag gateway connection. Currently it looks like I have a stale certificate that I'm unable to remove (401 error shown). After deleting the remote gateway connection settings, I deleted (copied elsewhere) /usr/local/bin/ignition/data/config/local/ignition/gateway-network/keystore/metro-keystore.pfx after the service was stopped, then started the service and the certificate is still there.