Mix Cross Platform

Your Master(s) and Slave(s) do not need to use the same broker to copy trades. You can have an LMAX Master with broker A and and a cTrader Slave with broker B. You can totally mix the technologies (MT4, MT5, cTrader, DXtrade, Tradovate/NinjaTrader, FXCM, LMAX, FIX API, Fortex,...) and the brokers.