Hiya.

You can export from XSI (in .x format), and it will keep animations. However, the bones will be useless (and screwed up). I haven't really sat down and tried every little export/import and creation/naming convention to try and find a way to make it work. But, as I said, if you don't need the bones intact (for bone animation via scripting in-game), then you can use XSI just fine.

My latest 'experiment' involves using Hash Animation:Master, building a 'duplicate bone rig' (same names and structure) in it, using that to animate and export as .bvh (or .fbx for the new A7 I suppose). Use Fragmotion to import my model, bone it as mentioned, import .bvh/.fbx and export as MD7. I haven't had a chance to try this, but everyone seems to think it will work... I guess I'll find out in a while.