does tradezero, in the us, support add liquidity only order types for example ARCA ALO or any post only this is in reference to their direct routing option, i can't seem to get an answer from anybody ( i don't think their online chat has an answer ) if you are wondering why, say you are long bac 21.80 x 21.81 xyz arbitrary price, and you post to 21.81 on arca, but arca decrements down to 0 but other ecns are on offer...then you will almost always accidentally remove liquidity which is basically a disaster on a stock like bac (1/3 of the spread if it routes out in terms of cost ) can anyone from tradezero, or anybody really, answer this question?