With an RV, all loads are on the battery bank, supported by the charger(s), so no point in using the load terminals on the solar controller at all. Your solar output in amps goes to loads first, then anything left goes to the battery if it needs any. Same with the converter--loads first.
Zero reason to use the load terminals of the controller--EXCEPT--the load terminals have all sorts of settings in the controller for how long to leave them on etc, which might have an application in an RV I have not thought of. So other than that, forget those load terminals IMO.
