In my search for the missing archive data, I somehow managed to launch a malware attack on my PC. I don't know if this was when I was going through my cache looking for older versions of the file I accidentally deleted or when I was clicking on web pages that, if not for my desperation, I normally would be more likely to avoid (I suspect this is the answer).
Regardless, this additional 'calamity' has meant that this page is being ignored again. I hope normal service can be resumed soon.
