Back when i went for rank 6 or 7 i noticed that a page dropped from a lost zone when i completed the 2 corrupted and lost zone, effectively giving me 3 pages but one was red so i couldnt loot it because i had already looted the 2 corrupted chests, so unless its been hotfixed we should still be able to get 4 pages in a full clear
So what I’m reading is that right now the hard cap is two pages per run, unless that goes up slowly then as of now, if you’re behind, you’re behind for good?
Just ran the stormwind one this week and did all 4 side zones (did not kill Alleria - barely) and can confirm only got 2 pages. Whether or not they came from the easy or the harder zones i can't say but it seems you cannot get the four pages in just the one run even if you can manage to clear all 4 zones in that same run.