The problem with 5e and 4e is that any update is actually starting from scratch. At best you know what a place looked like 100 years ago with a 50 word blurb to fill in the time jump.
Everyone in ravens bluff that we have any detail on is dead. All the places are likely gone and every plot hook we ever had has been solved.
Its not an update if you have no connection to the original.
Not that you shouldnt do it anyway but its my major bugbear with 5e and edition neutral lore. Its still starting from the beginning with a completely new setting
That's a good point. If I try to write an update set in the current year, I basically just have geography and history I can use from earlier depictions of the city and not much else.