So to add more data to this.

I JUST got kicked at 3369 in que

Relogged IMMEDIATELY after

And my spot was actually saved and I loged in at 3293 in que

Now the other times I relogged quickly as well but I dont know if it was immediate (since I had to get past the log screen boss a few times)

Perhaps its a case of if you can get back in your place QUICKLY (a 10-30sec perahps?) Or if you are at a certain threshold in the que (sub 4k?) that your place is or is more likely to be saved in the event of a d/c