Use the set security_services to 'default' parameter with alter route to change per-target security settings to global values set with configure replication server.
Follow this procedure:
Suspend the route. Enter:
suspend route to dest_replication_server
Alter the route. Enter:
alter route to dest_replication_server set security_services to 'default'
Resume the route. Enter:
resume route to dest_replication_server
Changes take effect after you resume the route. This procedure does not affect the configuration of use_security_services.