When closing two open positions, one after the other, explicitly referenced by magic number, and "full position" specified for both closes - the second close using the lot size of the first close, leaving a partial open position remaining if the second position was larger than the first. (e.g., first order size is 0.01 lot and second order is 0.02 lot; when closing each "full position", the first position (0.01) closes successfully but the second position only closes partially (0.01 lot closed, and 0.01 lot remains open).