2015/2016 Colonies/Expansions/Charters/Closures Thread Missing

[ADPi&Theta_Mom]

I know this is random, but I was on reading a thread that seemingly poofed (as best I can tell). The top of page 5 was posted on 06-03-2015, 04:04 AM (page 5): 2015/2016 Colonies/Expansions/Charters/Closures

When I tried to go to both earlier and later pages I received this message:

GreekChat Message
Invalid Thread specified. If you followed a valid link, please notify the administrator

Since the thread was posted a few months ago, I am curious as to why it would suddenly no longer be available, tonight. I wondered if someone is working on that thread and that made it unavailable but it's been a couple of hours now. I still have some of the pages on my computer, so I was able to refer to some of the information, fortunately.

Thanks for any help, technically or with an explanation! I'd love to finish reading the whole thread, but if not, just to understand what maybe happened (curiosity!)