Apologies in advance if this has already been answered elsewhere. I am flying JFK-LHR on WTP on 3/28, however when I open the BA App on my iPhone, the screen opens to my booking and the JFK-LHR flight shows seat 13A (which is in Business on a 744). However, when I go to MMB on the desktop, it still shows my original seat in WTP. Is this a glitch? Not sure what this means, any helpful insight is appreciated.