For your specific importing error, when in 3dsmax you want to open the schematic view and delete whats at the top. It has something to do with the export / import process I’m guessing. When importing into 3dsmax it takes the name of the model that is weighted to the bones and makes it the root. For your file, when you open the schematic view you’ll probably see the root bone named “root” and above it will be human_female_FPV, you want to delete that. In doing so it will separate the actual human_female_fpv which is the model, you shouldn’t need to reattach it as it should be weighted to the bones anyway. Hope that gets you started!