Hello,

I am implementing a broker API and I can tell you BrokerTrade can handle a trade fully closed manually from the broker GUI with a negative value returned from BrokerTrade corresponding to the lot amount initially opened and Zorro understands this trade is now closed.
However, as I raised the issue in a recent post, it does not work for partially closing the trade manually. When the negative size returned is smaller in absolute value than the lot amount of this trade, Zorro does not do any update on lot amount of the trade.