Current track - alias - why is not working?

I have no problem to route multi-output instrument (like SampleTank for example) to different tracks using aliases. Problem is that there is option “Current track” that, I assume, supposed to work like output to actual track. But it doesn’t work that way. It outputs to the same track as used in first instance. For me “Current Track” means that it should play on track where instrument (alias) was used. Or am I wrong?

I’m not asking how it works, I see how it works. I’m asking about why “current track” doesn’t mean current track. All I should need is to set midi channel, but I must setup specific track to made it output proper.