Sure, the technique is dated, however, it works perfectly. If it ain’t broke, don’t fix it. You simply use a blender addon with a companion roblox plugin, the blender addon exports animation data in form of a long string of text which gets copied to your clipboard, you paste it into a script into roblox studio, plugin reads the script, and adds the animation. As such, all easing, animation, everything, is imported perfectly. It works for both r15 and r6 to my knowledge, its great.
Plugin is blender animation importer/exporter by den_s
You can also use a video tutorial.
@gam0900 if you consider switching, this will also help