I found a solution that is working quite well! It’s just a few easy steps. Tested in 4.15
Step 1: Remove the character mesh and animation BP from the Parent. (Set AnimBP to None)
Step 2: In the Child, use the node “Set Skeletal Mesh” to your character. Check “Reinit Pose” and set the inherited mesh as the target.
Step 3: Use the node “Set Anim Instance Class” to your animationBP. Same mesh target
That should about do it.
I have have eight child actors all using this method and it works with all of them, no loss of data or missing characters.
Here’s a couple images to help ya out.
Parent Character
Child

