Växjö conceded a 3-3 goal in the final seconds away against Örebro.
But still won.
Felix Robert decided just over nine minutes into overtime.
Växjö led with both 2-1 and 3-2 in the first quarterfinal in Örebro. But Milton Oscarsson kept himself in the game with just three seconds left of the third period and could angle in the equalizer on Patrik Puistola's pass.
It was still the visitors who got to celebrate in the end. Felix Robert decided after 9.38 of overtime.
The home team's Kalle Kossila, previously in Växjö, was given a match penalty in the second period for a tackle in the back of Hugo Gustafsson, who had to leave the game.