Some inverters are also converter/chargers, but that is not the case with your Xantrex XM 1000. An inverter produces 120v power from a battery, while a converter/charger produces 12v power from 120v shore or genset power for use in powering 12v circuits and charging batteries. Sometimes both are packaged as one unit, but they are effectively two different devices even when in the same box.
Your XM 1000 has 120v input so it does not need to invert from 12v (battery) when shore power is available, but it has no converter/charger function.
You probably have a converter/charger built into the coach power center, where the 120v circuit breakers and 12v fuses are located.