There were some changes to how Minecraft handles world data and saves recently, the advice at the time was to "walk around" to force updates.
My map is huge, I've had it since early alpha. Is there any kind of tool or utility that can update the entire map at once?
You can still play 1.8 worlds on 1.9.
Minecraft mod developer. I will always answer pm's.
Yeah the map loads but I've encountered the occasional odd issue. I was looking for a program or utility to convert the entire map at once.
Try this link. This show you how to marge the old map with a new map that has the same seed.
Thanks, that is useful but not quite what I was looking for.
I want to update the existing map to the new file format. All at once. Without "flying around in creative mode" because it's freaking huge.
From another thread:
1.7-style NBT which can be read and converted by MC1.8 but not by MC1.9