turtlebot_node/cmd_vel electric

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Hi, In electric the problem that some nodes publish or subscribe turtlebot_node/cmd_vel or cmd_vel is supposed to be solved, but when I do sudo service turtlebot start the turtlebot node keeps listening to turtlebot_node/cmd_vel instead of cmd_vel. I've been reeding the code but I can't see where's the problem, there's no remap and where the listener is defined it doesn't have ~ in front, so it's supposed to listen to cmd_vel. Actually, if I ran a roscore and then rosrun turtlebot_node turtlebto_node.py it listens to the correct node. How can I fix it?

Thanks.