Reset specific uORB-Topic without rebooting Pixhawk

Hi everyone,

Is it possible to reset/restart specific uORB-Topic without rebooting Pixhawk? Especially I am interesting to reset transporter_report topic. I have connected a FLARM Receiver to my Pixhawk to get ADS-B Messages from other Vehicles so he can publish all data I need to this topic. The first (cold) start works fine I get information and see other vehicles on a map. If I stop and then start it again I get no vehicles displayed on the map. If II look with a “listener transponder_report” via Mavlink first time I would see something like (see below), and after driver restart (see also below)

And with each my driver restart I will get +1 instance. Can someone please explain what these instances are?topic_first_x