There is currently no known way to edit NBT stored in the MCBE LevelDB format. This method used to work, but does not work anymore. To solve this problem, follow the method detailed here. UMCE has not been programmed to detect the new ChunkVersion tag, and hence, it does not detect any chunks. The problem has been traced back to changes to MCBE LevelDB format, mainly the move of ChunkVersion from value 118 to value 44.
Currently, it only displays a blank white canvas instead of loading in chunks from your world. Important attention! Some of the instructions below no longer work with the Universal Minecraft Editor due to its broken chunk locator.
