RoboRumble

How do the battles work on Robo Rumble? Do bots play X consecutive rounds against each other or is each paring just one round?

I just want to know if I need to save data at the end of a battle and load for the next battle, or whether there is enough time to learn from scratch each pairing? If its only one round per battle I can't imagine there is much time to populate GF arrays etc?

If I need to save data, do people find problems with the number of bots meaning the data saved has to be very small?

Lastly how do people tend save data from KNN trees? Or do they not bother?

Cheers!