Exporting mods from the alpha version.

I have 2 assumptions on this topic:
1. The bone arrangement does not match the model.
2. When the gr2 geometry is exported to the game format, it is "optimized" by the editor specifically for the specified skeleton, which is why the model will not work correctly with other skeletons, even if all their bones are identical.
In general, here is the model of that very paladin with a skeleton from the alpha version.