MCDzienny

So I've tried importing a map saved by ClassiCube and I've reported on ClassiCube forums and they say that the data is different, I was hoping maybe you can get /import to convert them properly?

Currently, it's not viable. The problem is that ClassiCube serializes the map data with the Java algorithm that is not available in C#. I could reverse engineer the current map structure, but this structure is likely to change in the future and that would break the *.dat file compatibility again. It's just not worth the time, unless ClassiCube formalizes the structure of the map file.

I don't think anyone is working on this. You can make the suggestion on the related github repository.