I share your frustration on this one. Many times I've checked for elusive ancestors in "updated" record sets, and still found nothing.
One other thing I have discovered with the London baptisms, marriages and burials is not all of the images are indexed; far from it in fact. Recently I have been...
The last Australian census or two gave the option to save your data for posterity, which of course I did. Hopefully the same this time.
I'm also hoping there isn't another site meltdown, but I'm not holding my breath.