The way this blog works is if you delete an update it doesn't reindex anything so the deleted id is essentially lost forever unless you manually assign it yourself. So it's conceivable they were deleted for whatever reason. With #72 this is very likely since updates 71 and 73 were made 24 hours apart. 63 is a little more of a mystery since there is a six day gap between 62 and 64, however update 64 pertains to the death of my grandfather so it's pretty plausible I had something written and posted and then deleted it. Who knows though?
At any rate I'm pretty happy that I managed to recover everything (or as close as possible anyway) and I am now going to get a database dump so I don't have to do this god damned crap ever again (or at least not for nearly 50 updates).
And thusly the saga ends.