@Ryu Since FBX is owned by Autodesk, you can use 3ds Max or either Maya and you can find the proper exporters/importers for FBX aswell in the official site, they should work very alike. He suggest to use any ver from 2013. @Xarple Tested, now rsm to fbx is working as a charm. Although there it is necessary (in my case) to rotate it at 180 "X" degrees when importing the fbx, all is fine. I'm still wondering about:
I allready added the set resources in your tool, and the textures are extracted from the grf and placed where the fbx is generated (preserving the directory name), that is working. What I can't figure it out is, at the time I import the fbx in 3ds max, the textures are not added as materials. However, the statistics of the model at the time of importing is showing the amount of textures, but no textures are added to the materials of the scene. Maybe it is a newbie question, but I have to confess that I have not dealed specifically with FBX as other formats I'm more get used to work.