Is archived long topic be cut or somehow?

[Cassielu]

I was recently working on a video looking back at the solving of the cyclum and metheus puzzles, and I looked for some records from back then. So I went back to this topic:

In my memory, there are hundreds of pages on this topic. There are also references in the topic that seem to come from further back on the same topic. But now for some reason I can only access the first page of this topic.

I wonder if this is because the forum has cut the archived topic, or if there is some other reason I cannot access it. If they are deleted, is there anywhere else to get the information?