Originally Posted by
Ditto
Not really an issue, as OP will pass security in 2E and will then head over to 2F for immigration. (also, I was never asked for a BP passing immigration between 2E to 2F so no problem to 'back track' if needed)
OP Will pass both security and immigration at 2F if arriving at gates K or M since the passenger flows to the main terminal and get separated just before the immigration hall.