Some Gex 3 levels don't load at all.

[Retrofuge]

I was going through the program to export level scenes. But I noticed that following files, gexcave6.drm and gexcave8.drm and war01.drm doesn't work when you try to load them, wasn't sure why it's the case since everything else works perfectly. I want to know if there's a future patch to update this in the future? It would be great to be able to get all the content from the game at the very least.