server crash and rollback

I was doing 78 maps rotation in standard when server crashed when we were entering Tora's den. First game kicked all of us from the party and we were all able to walk around while loading the den area. Then we got kicked to login screen. When I logged in rare 78 palace and white 77 shipyard maps were gone from my inventory (I picked them in the map). Maybe some other items were lost too but I don't recall. This is just sad, I don't have any 78 map left so I couldn't continue with the rotation :/