The Problem

As of 1.18, the world build limits go from -64 to 320 or something. Existing regions that were previously from bedrock-to-build-limit (e.g. via //expand vert or similar) will no longer cover the full world height. This may cause an unintentional lapse in protection for servers where fully vertical regions are important for whatever reason.

A Solution

A command such as /rg migrateheights [world] which will, for every region that current goes from 0-255, expand it to go from -64 to 320.

Alternatives

• Have people manually select, expand, redefine each region
• Have some external script that can migrate a region file (or sql loljk)

Anything Else?

Dropping this here cuz I've meant to look into it several times this week but kept forgetting.