Here's one of the affected threads: https://forum.atlas-games.com/t/1227-2t-line-of-dimication/7505/1
The issue ONLY occurs between page 5 and page 6: there are four posts missing from the bottom of page 5, which can be brought up by editing the "start=60" bit to read "start=65". They're still there, they're just not being displayed.