Are you blaming me, or Epic’s tool? I’m providing a solution to the question, that’s the point of the Answer hub. If you are still having issues, you can also rmb the skeletal mesh>skeleton>assign skeleton. This also allows to copy over the bones from the existing/old skeleton. I’m not even an expert in the animation pipeline, but was able to figure all of these out. I wasn’t satisfied with the current collection of answers to this question.