So I was trading the USD/JPY spot forex pair with IB and I ended up with two million of JPY in profit. I used IDEAL and sold two million JPY to convert my profit into dollars and now TWS shows that I have a JPY short of 2 million, even though I don't actually have any JPY anymore. On an accounting basis, I don't have any forex exposure, but its rather annoying to see that open position in TWS. So will this ever go away by itself? Or am I just stuck with it?
Took me a while to track this down. But, if you open the account window (make sure you have the 'Show FX positions in portfolio' checked in settings). Right-click on the position, and say 'Change postion size'. Set it to 0. Now it is no longer considered a position but a conversion.