Deliverator
Graphical Hackificator
I have the same problem. I would like to add bones for FX triggers but when I do a br2 to gr2 it does not work, its either invisible or contorted.
I don't think you can move the structure bones, I think you would need to edit the animations as well if you did that, but I don't know that for sure.
There is something you can try for adding fx bones or editing skeletons.
Creating your GR2 from FBX usually mangles the meshes but as far as I know Skeletons are usually imported OK. You can check this in Granny Viewer by using the skeleton display options.
Providing this is the case, you could try this approach:
1) Export your model from Blender to both FBX and BR2 formats.
2) In Nexus Buddy import from your FBX file - all being well this should create a GR2 with your skeleton including any additional or altered bones. Your meshes might well be corrupted but it doesn't matter because...
3) Overwrite the meshes from your BR2 file.
Haven't tried this but I think it could be the only reliable way to add additional FX bones etc.
This would also be the best way of converting Civ 4 skeletons and animations or doing custom animation for anyone brave enough to try that!
It's unfortunate that importing from BR2 doesn't work reliably for skeletons. Some of the maths and code involved is pretty complex so I'm pleased any of it works at all. Which reminds me I should release all the source for Nexus Buddy at some point.