Sync data with Teslamate via MQTT

[dragorex71]

Hi everyone, i have probably a very silly question about my configuration.
I have choised to sync data via teslamate/MQTT and it works; i can successfully listen the mqtt topic.
The question is: have i to create all the mqtt version of the sensors (so i'll have two of each sensor, one from the integration under the polling rule and one from mqtt) or the integration update the own sensors via mqtt and no more under the polling rule? In this case, can i shutdown the polling switch having the sensor update from mqtt?
In the first case (of creating all the mqtt sensor), can i disable all the integration sensors that have a mqtt version real-time updated; or at least turn off the polling switch?

Another minor question is about icons. I created the mqtt version of the sensor.battery: the sensor.tesla_usable_battery_level. The sensor.battery from the integration has the icon that change dynamically for color (based on the %) and also if the charge is going on or not. And all of this on its own, i have made no setting at all. For the mqtt sensor.tesla_usable_battery_level instead i had to choose an icon and it is fixed. Is there a trick for having the same behavior of the other sensor.battery?
Sorry for my english, thanks in advance