I have been flying a B200 with some version of an APS-65 that has, in the last 18 months been completely upgraded to an all garmin (g1000) avionics and autopilot system. It doesn’t now, but it did have a rudder trim that was automatic and connected to a servo. I’ve flown C90s, B200s, B300s and 1900Ds and Cs and it’s the first of that type that I’ve ever seen where the rudder trim control would move by itself. You could displace it to one side and it would then wind itself back to close to neutral. I think in the situation above, if the autopilot had been selected, the trim would’ve wound itself back to neutral. I’m not sure this is a feature of all the B200s from that era..our company has another that didn’t automatically trim the rudder..but a much earlier model