question about plane of power raid

[jhs7986]

I have heard of strange PoP raid zone rule. I didn't see it exactly.

There are two zones in PoP raid(Perhaps first instanced raid dungeon in eq, plane of time)
Zone A(waiting room of raid)
Zone B(raid zone)

When even one person goes to zone A to zone b, all zone A people forcibly moved to zone B. And if you can't clear with the people who entered at this time, you have to wait 5 days.

I was told that these systems were quickly gone. Why was there such a weird system?