I had orders to taken off the offer and was charged $.65-$1 per contract except on 5. The 5 contracts that routed to ISE provided a tiny negative commission while 30 on CBOE was $20? On the phone app the only way to change routes using a day or GTC switching? GTC went to CBOE and ISE while day GMNI and EDGX. I am not complaining just trying to better understand why providing liquidity has commission all over the place. IB is a great platform, love it but want to better understand routing on the phone. Is there a way to route to PHLX on the app?