Hey, today I have completed the update of this tool
Now that is possible to convert any rsm model to fbx, and convert it back without any differences. The tool make the conversion as much as possible to keep original infos (parent-child relationships, transforms, animations, smooth groups, texture names). So we can easily modify details of official models, like below.
BTW, browedit still will crash that way. I have emailed borf, hopes he notice my mail and can be interested to debug it