I've just received some players complain, and show me a snapshot to ask for why there are previous same game in the list... another one said his game is resized in a short screen. All these problems are coming from using old ini file. It's just all removed when recreate a new one. 
But when I tell them to remove the ppsspp.ini file, they even don't know where is it... especially on Androit. So that's why I want recreate the ini file. And I think there is no reason to keep the unsupported old setting to risk arising more bug reports on it.