Guild Wars 2

I was doing the raid bosses in the pavilion then at the last one the game disconnected and i relog immediately and all the raid bosses where spawned again. I started killing them again and at the last one again game disconnected and i again relog immediately and all the bosses where spawn again.

Anyone knows what has happened?

You got on another server where the bosses hadn´t been killed.

So every time i disconnect and relog i will be in an other server?
Thx for the answer