This did not work for me and when I changed my controllers from Transform to Euler Transform they moved and rotated themselves. I disconnected the execute and even unparented them, same deal, so I had to figure things out… I had to copy the bone transforms then paste global transform back into my control then set to closest bone again to fix it. Some glitches here and there when going back to the sequencer but a restart of UE4 seemed to fix those.
Annoyances:
You have to set each Controller one by one to the Transform Euler
It may move, you need to get its position back
Note: Keep the execute disconnected while fixing things to avoid other annoyances.