Character rolled back after a disconnect

So I opened a map as usual, went in, got like half of the map done and got disconnected after some lagspikes. I logged back in immediately and what do I see? Map is gone, scarabs i used are gone, portals are gone, my drops are gone and my exp is back to what it was before i entered the map...
Ive hade disconnects before but this kind of rolling back happened to me like 2 or 3 times in the past 4 leagues