The last update restored the personal Story to its original order; however, the levels and rewards of some of the Missions were not Updated.
Chapter 8, Victory or Death, are level 80 missions, but when you start doing Against Corruption, the missions drop down to level 70 again. These missions also reward lvl 70 items. my next mission, Cathedral of Silence, is also lvl 70. I haven’t seen the further missions, but it seems that while the Order of the personal story was fixed, their rewards and levels weren’t changed. So we have missions that are lvl 80 then go back down to 70.