Best bet is to write into Currenex API so you have the option of switching brokers without having to reprogram your strategy.
I ran into another trader on a different forum with a similar issue..
Just be wary of which CNX broker you choose; there a bunch out there with very poor liquidity...
Forex.com really isn't THAT bad for MT4 trading... Especially considering their new spreads which are almost fixed on the majors with 4 digit pricing..
good for EA traders at least, JMO