CORRUPTED NEXUS BUG

Hi,

I am currently trying to complete T13 Corrupted Nexus, I entered to the area which was center of the T13 corruption area, at the middle of the map progress, some mobs attacked me and my game crushed. Game closed, I reconnected to the game and continued where I left, killed all rares, map also contained a boss, I killed it, cleared corrupted area but there was no book of knowledge or any atlas progression, T13 nexus mission resetted, area which I cleaned turned to cleansed now I have to find new nexus area. I can not play the game often due to my job, this whole nexus thing already consumes lots of time and now I have to play probably two more hours to complete T13 nexus, what can I do or what should I do? I am really bored of this nexus thing and now because of the crash I have to play t13 maps around 2 more hours...