I'm on 2019.1. This used to work in 2018.2 or so. I could put an animator on them and record clips or timeline tracks to move the limbs and things around. Now, that's impossible, apparently. Recording doesn't save any key frames for the effector position, and if you manually create them, they're ignored. How are you supposed to animate these things now? An animator on every single bone?' ---edit--- Read the docs and see the target is supposed to be animated. Weird that it used to work at all!